Mourners at a vigil Thursday in Westlake Village, Calif., not far from where the Borderline Bar & Grill shooting happened. (Barbara Davidson/Getty Images)

THREE YEARS ago, after nine people were gunned down at a community college in Roseburg, Ore., we published a list of some of the other victims of mass shootings in the United States. “Our hope,’’ we wrote, “is that we never become numb to these terrible, preventable events, but instead honor these victims by acting to prevent future shootings.”

Sadly — maddeningly — Congress has failed to do that. And the list has only gotten longer. Since its last appearance, in February, after the massacre at Marjory Stoneman Douglas High School in Florida, there have been mass shootings at a newspaper office in Maryland, a Texas high school, a Waffle House in Tennessee, a drugstore distribution center in Maryland, a synagogue in Pittsburgh and, most recently, a bar in Southern California.

The Nov. 7 shooting at the Borderline Bar & Grill in Thousand Oaks was the 307th mass shooting in the United States this year, according to data from the Gun Violence Archive showing that, in all, 328 people died. Killed at the Borderline Bar were Sean Adler, 48; Cody Coffman, 22; Blake Dingman, 21; Jake Dunham, 21; Ron Helus, 54; Alaina Housley, 18; Dan Manrique, 33; Justin Meek, 23; Kristina Morisette, 20; Mark Meza Jr., 20; Telemachus Orfanos, 27; and Noel Sparks, 21.

Before them there were others, though, of course, this is not a complete list.

April 20, 1999, at Columbine High School in Littleton, Colo.: Cassie Bernall, 17; Steven Curnow, 14; Corey DePooter, 17; Kelly Fleming, 16; Matthew Kechter, 16; Daniel Mauser, 15; Daniel Rohrbough, 15; William “Dave” Sanders, 47; Rachel Scott, 17; Isaiah Shoels, 18; John Tomlin, 16; Lauren Townsend, 18; Kyle Velasquez, 16.

Dec. 26, 2000, at Edgewater Technology in Wakefield, Mass.: Jennifer Bragg Capobianco, 29; Janice Hagerty, 46; Louis “Sandy” Javelle, 58; Rose Manfredi, 48; Paul Marceau, 36; Cheryl Troy, 50; Craig Wood, 29.

March 21, 2005, at Red Lake High School on the Red Lake Indian Reservation in Red Lake, Minn.: Derrick Brun, 28; Dewayne Lewis, 15; Chase Lussier, 15; Daryl Lussier, 58; Neva Rogers, 62; Chanelle Rosebear, 15; Michelle Sigana, 32; Thurlene Stillday, 15; Alicia White, 15.

Oct. 2, 2006, at an Amish schoolhouse in Lancaster County, Pa.: Naomi Ebersol, 7; Marian Stoltzfus Fisher, 13; Lena Zook Miller, 7; Mary Liz Miller, 8; Anna Mae Stoltzfus, 12.

April 16, 2007, at Virginia Tech in Blacksburg, Va.: Ross Abdallah Alameddine, 20; Christopher James “Jamie” Bishop, 35; Brian Bluhm, 25; Ryan Clark, 22; Austin Cloyd, 18; Jocelyne Couture-Nowak, 49; Daniel Perez Cueva, 21; Kevin Granata, 46; Matthew G. Gwaltney, 24; Caitlin Hammaren, 19; Jeremy Herbstritt, 27; Rachael Elizabeth Hill, 18; Emily Hilscher, 19; Jarrett Lane, 22; Matthew J. La Porte, 20; Henry Lee, 20; Liviu Librescu, 76; G.V. Loganathan, 51; Partahi Lumbantoruan, 34; Lauren McCain, 20; Daniel O’Neil, 22; Juan Ramon Ortiz, 26; Minal Panchal, 26; Erin Peterson, 18; Michael Pohle, 23; Julia Pryde, 23; Mary Read, 19; Reema Samaha, 18; Waleed Shaalan, 32; Leslie Sherman, 20; Maxine Turner, 22; Nicole R. White, 20.

Dec. 5, 2007, at the Westroads Mall in Omaha: Beverly Flynn, 47; Janet Jorgensen, 66; Gary Joy, 56; John McDonald, 65; Gary Scharf, 48; Angie Schuster, 36; Dianne Trent, 53; Maggie Webb, 24.

April 3, 2009, at the American Civic Association immigration services center in Binghamton, N.Y.: Parveen Nln Ali, 26; Almir O. Alves, 43; Marc Henry Bernard, 44; Maria Sonia Bernard, 46; Hai Hong Zhong, 54; Hong Xiu Mao, 35; Jiang Ling, 22; Layla Khalil, 57; Roberta King, 72; Lan Ho, 39; Li Guo, 47; Dolores Yigal, 53; Maria Zobniw, 60.

Nov. 5, 2009, at Fort Hood, near Killeen, Tex.: Michael Grant Cahill, 62; Libardo Eduardo Caraveo, 52; Justin Michael DeCrow, 32; John P. Gaffaney, 56; Frederick Greene, 29; Jason Dean Hunt, 22; Amy S. Krueger, 29; Aaron Thomas Nemelka, 19; Michael S. Pearson, 22; Russell Seager, 51; Francheska Velez, 21; Juanita L. Warman, 55; Kham See Xiong, 23.

Jan. 8, 2011, in the parking lot of a grocery store near Tucson: Christina Taylor Green, 9; Dorothy Morris, 76; John M. Roll, 63; Phyllis Schneck, 79; Dorwan Stoddard, 76; Gabriel Zimmerman, 30.

Feb. 27, 2012, at Chardon High School in Chardon, Ohio: Demetrius Hewlin, 16; Russell King, Jr., 17; Daniel Parmertor, 16.

April 2, 2012, at Oikos University in Oakland, Calif.: Tshering Rinzing Bhutia, 38; Doris Chibuko, 40; Sonam Choedon, 33; Grace Eunhea Kim, 23; Katleen Ping, 24; Judith O. Seymour, 53; Lydia Sim, 21.

July 20, 2012, at the Century Aurora 16 movie complex in Aurora, Colo.: Jonathan Blunk, 26: A.J. Boik, 18; Jesse Childress, 29; Gordon W. Cowden, 51; Jessica Ghawi, 24; John Thomas Larimer, 27; Matthew McQuinn, 27; Micayla Medek, 23; Veronica Moser-Sullivan, 6; Alex Matthew Sullivan, 27; Alexander Teves, 24; Rebecca Ann Wingo, 32.

Aug. 5, 2012, at the Sikh Temple of Wisconsin in Oak Creek, Wis.: Satwant Singh Kaleka, 65; Suveg Singh Khattra, 84; Paramjit Kaur, 41; Prakash Singh, 39; Ranjit Singh, 49; Sita Singh, 41.

Dec. 14, 2012, at Sandy Hook Elementary School in Newtown, Conn.: Charlotte Bacon, 6; Daniel Barden, 7; Rachel D’Avino, 29; Olivia Engel, 6; Josephine Gay, 7; Dylan Hockley, 6; Dawn Hocksprung, 47; Madeleine F. Hsu, 6; Catherine V. Hubbard, 6; Chase Kowalski, 7; Jesse Lewis, 6; Ana M. Marquez-Greene, 6; James Mattioli, 6; Grace McDonnell, 7; Anne Marie Murphy, 52; Emilie Parker, 6; Jack Pinto, 6; Noah Pozner, 6; Caroline Previdi, 6; Jessica Rekos, 6; Avielle Richman, 6; Lauren Russeau, 30; Mary Sherlach, 56; Victoria Soto, 27; Benjamin Wheeler, 6; Allison N. Wyatt, 6.

Sept. 16, 2013, at the Washington Navy Yard in the District: Michael Arnold, 59; Martin Bodrog, 54; Arthur Daniels, 51; Sylvia Frasier, 53; Kathy Gaarde, 62; John Roger Johnson, 73; Mary Frances DeLorenzo Knight, 51; Frank Kohler, 51; Vishnu Bhalchandra Pandit, 61; Kenneth Bernard Proctor, 46; Gerald Read, 58; Richard Michael Ridgell, 52.

April 2, 2014, at Fort Hood near Killeen, Tex.: Daniel M. Ferguson, 39; Carlos A. Lazaney-Rodriguez, 38; Timothy Wayne Owens, 37.

April 13, 2014, at the Jewish Community Center of Greater Kansas City and the Village Shalom Retirement Center, both in Overland Park, Kan.: William Lewis Corporon, 69; Terri LaManno, 53; Reat Griffin Underwood, 14.

June 17, 2015, at Emanuel African Methodist Episcopal Church in Charleston, S.C.: Sharonda Coleman-Singleton, 45; DePayne V. Middleton Doctor, 49; Cynthia Graham Hurd, 54; Susie Jackson, 87; Ethel Lee Lance, 70; Clementa C. Pinckney, 41; Tywanza Sanders, 26; Daniel Simmons, 74; Myra Thompson, 59.

July 16, 2015, at an armed services recruiting center and a Navy reserve center in Chattanooga, Tenn.: Carson A. Holmquist, 25; Randall Smith, 26; Thomas J. Sullivan, 40; Squire K. “Skip” Wells, 21; David A. Wyatt, 35.

Oct. 1, 2015, at a community college in Roseburg, Ore.: Lucero Alcaraz, 19; Treven Taylor Anspach, 20; Rebecka Ann Carnes, 18; Quinn Glen Cooper, 18; Kim Saltmarsh Dietz, 59; Lucas Eibel, 18; Jason Dale Johnson, 33; Lawrence Levine, 67; Sarena Dawn Moore, 44.

Nov. 27, 2015, at a Planned Parenthood clinic in Colorado Springs: Jennifer Markovsky, 36; Ke’Arre M. Stewart, 29; Garrett Swasey, 44.

Dec. 2, 2015, at an office park in San Bernardino, Calif.: Robert Adams, 40; Isaac Amanios, 60; Bennetta Betbadal, 46; Harry Bowman, 46; Sierra Clayborn, 27; Juan Espinoza, 50; Aurora Godoy, 26; Shannon Johnson, 45; Larry Daniel Kaufman, 42; Damian Meins, 58; Tin Nguyen, 31; Nicholas Thalasinos, 52; Yvette Velasco, 27; Michael Raymond Wetzel, 37.

June 12, 2016, at Pulse nightclub in Orlando: Stanley Almodovar III, 23; Amanda L. Alvear, 25; Oscar A. Aracena Montero, 26; Rodolfo Ayala Ayala, 33; Antonio Davon Brown, 29; Darryl Roman Burt II, 29; Angel Candelario-Padro, 28; Juan Chavez Martinez, 25; Luis Daniel Conde, 39; Cory James Connell, 21; Tevin Eugene Crosby, 25; Deonka Deidra Drayton, 32; Simón Adrian Carrillo Fernández, 31; Leroy Valentin Fernandez, 25; Mercedez Marisol Flores, 26; Peter Ommy Gonzalez Cruz, 22; Juan Ramon Guerrero, 22; Paul Terrell Henry, 41; Frank Hernandez, 27; Miguel Angel Honorato, 30; Javier Jorge Reyes, 40; Jason Benjamin Josaphat, 19; Eddie Jamoldroy Justice, 30; Anthony Luis Laureano Disla, 25; Christopher Andrew Leinonen, 32; Alejandro Barrios Martinez, 21; Brenda Marquez McCool, 49; Gilberto R. Silva Menendez, 25; Kimberly Jean Morris, 37; Akyra Monet Murray, 18; Luis Omar Ocasio Capo, 20; Geraldo A. Ortiz Jimenez, 25; Eric Ivan Ortiz-Rivera, 36; Joel Rayon Paniagua, 32; Jean Carlos Mendez Perez, 35; Enrique L. Rios Jr., 25; Jean Carlos Nieves Rodríguez, 27; Xavier Emmanuel Serrano-Rosado, 35; Christopher Joseph Sanfeliz, 24; Yilmary Rodríguez Solivan, 24; Edward Sotomayor Jr., 34; Shane Evan Tomlinson, 33; Martin Benitez Torres, 33; Jonathan A. Camuy Vega, 24; Juan Pablo Rivera Velázquez, 37; Luis Sergio Vielma, 22; Franky Jimmy DeJesus Velázquez, 50; Luis Daniel Wilson-Leon, 37; Jerald Arthur Wright, 31.

Jan. 6, 2017, at the baggage claim of Fort Lauderdale-Hollywood International Airport in Florida: Mary Louise Amzibel, 69; Terry Andres, 62; Michael Oehme, 57; Shirley Timmons, 70; Olga Woltering, 84.

June 5, 2017, at an awning company near Orlando: Kevin Clark, 53; Kevin Lawson, 46; Brenda Montanez-Crespo, 44; Jeffrey Roberts, 57; Robert Snyder, 69.

Oct. 1, 2017, on the Las Vegas Strip: Hannah Ahlers, 34; Heather Alvarado, 35; Dorene Anderson, 49; Carrie Barnette, 34; Jack Beaton, 54; Stephen Berger, 44; Candice Bowers, 40; Denise Burditus, 50; Sandy Casey, 35; Andrea Castilla, 28; Denise Cohen, 58; Austin Davis, 29; Thomas Day Jr., 54; Christiana Duarte, 22; Stacee Rodrigues Etcheber, 50; Brian Fraser, 39; Keri Galvan, 31; Dana Gardner, 52; Angela Gomez, 20; Charleston Hartfield, 34; Christopher Hazencomb, 44; Jennifer Topaz Irvine, 42; Teresa Nicol Kimura, 38; Jessica Klymchuk, 34; Carly Kreibaum, 33; Rhonda LeRocque, 42; Victor Link, 55; Jordan McIldoon, 23; Kelsey Breanne Meadows, 28; Calla-Marie Medig, 28; Sonny Melton, 29; Patricia Mestas, 67; Austin Meyer, 24; Adrian Murfitt, 35; Rachael Parker, 33; Jennifer Parks, 36; Carolyn Parsons, 31; Lisa Patterson, 46; John Phippen, 56; Melissa Ramirez, 26; Jordyn Rivera, 21; Quinton Robbins, 20; Cameron Robinson, 28; Rocio Guillen Rocha, 40; Tara Roe, 34; Lisa Romero-Muniz, 48; Christopher Roybal, 28; Brett Schwanbeck, 61; Bailey Schweitzer, 20; Laura Shipp, 50; Erick Silva, 21; Susan Smith, 53; Brennan Stewart, 30; Derrick Taylor, 56; Neysa Tonks, 46; Michelle Vo, 32; Kurt Von Tillow, 55; Bill Wolfe Jr., 42.

Nov. 5, 2017, at the First Baptist Church in Sutherland Springs, Tex.: Keith Allen Braden, 62; Robert Michael Corrigan, 51; Shani Louise Corrigan, 51; Emily Garcia, 7; Emily Rose Hill, 11; Gregory Lynn Hill, 13; Megan Gail Hill, 9; Crystal Marie Holcombe, 36; John Bryan Holcombe, 60; Karla Plain Holcombe, 58; Marc Daniel Holcombe, 36; Noah Holcombe, 1; Dennis Neil Johnson, 77; Sara Johns Johnson, 68; Haley Krueger, 16; Robert Scott Marshall, 56; Karen Sue Marshall, 56; Tara E. McNulty, 33; Annabelle Renae Pomeroy, 14; Ricardo Cardona Rodriguez, 64; Therese Sagan Rodriguez, 66; Brooke Bryanne Ward, 5; Joann Lookingbill Ward, 30; Peggy Lynn Warden, 56; Lula Woicinski White, 71.

Feb. 14, 2018, at Marjory Stoneman Douglas High School in Parkland, Fla.: Alyssa Alhadeff, 14; Scott Beigel, 35; Martin Duque, 14; Nicholas Dworet, 17; Aaron Feis, 37; Jaime Guttenberg, 14; Chris Hixon, 49; Luke Hoyer, 15; Cara Loughran, 14; Gina Montalto, 14; Joaquin Oliver, 17; Alaina Petty, 14; Meadow Pollack, 18; Helena Ramsay, 17; Alex Schachter, 14; Carmen Schentrup, 16; Peter Wang, 15.

May 18, 2018, at Santa Fe High School in Santa Fe, Tex.: Jared Black, 17; Shana Fisher, 16; Christian Riley Garcia, 15; Aaron Kyle McLeod, 15; Glenda Ann Perkins, 64; Angelique Ramirez, 15; Sabika Sheikh, 17; Christopher Stone, 17; Cynthia Tisdale, 63; Kimberly Vaughan, 14.

June 28, 2018, at the Capital Gazette newsroom in Annapolis : Gerald Fischman, 61; Rob Hiaasen, 59; John McNamara, 56; Rebecca Smith, 34; Wendi Winters, 65.

Oct. 27, 2018, at Tree of Life Synagogue in Pittsburgh : Joyce Fienberg, 75; Richard Gottfried, 65; Rose Mallinger, 97; Jerry Rabinowitz, 66; Cecil Rosenthal, 59; David Rosenthal, 54; Bernice Simon, 84; Sylvan Simon, 86; Daniel Stein, 71; Melvin Wax, 87; Irving Younger, 69.

One of those killed at Borderline — his name was Telemachus Orfanos — also had been in Las Vegas when a gunman there went on a rampage last year. That this young man survived the worst mass shooting in recent U.S. history, only to die in another slaughter, speaks volumes about gun violence in the United States and the unspeakable failure of national lawmakers to do anything about it.

Said his grieving and furious mother: “My son was in Las Vegas with a lot of his friends, and he came home. He didn’t come home last night, and I don’t want prayers. I don’t want thoughts. I want gun control, and I hope to God nobody sends me any more prayers. I want gun control. No more guns.”

A new Congress will soon be sworn in with Democrats in control of the House. It is time to act.