Forty-nine people, many of them young gay men, died Sunday when a man who had pledged allegiance to the Islamic State militant group opened fire inside Pulse, a popular Orlando gay club. It was Latin Night, and the club was packed. It was also Pride month, a celebration of LGBT communities, rights and lives.     The shooter, FBI Director James Comey said Monday, was probably radicalized by extremist propaganda online. But something else that was said about the killer — this time by his father — hinted at an additional layer to his possible motivation.

“We were in downtown Miami, Bayside, people were playing music. And he saw two men kissing each other in front of his wife and kid, and he got very angry,” Seddique Mir Mateen, the gunman’s father, told NBC on Sunday. The Internet has responded with #TwoMenKissing, an emerging hashtag with which people are making the thing the gunman allegedly hated visible.