Thirty-nine years ago Sunday, the Supreme Court arrived at a 7 to 2 decision in the landmark Roe v. Wade case, establishing a woman’s right to an abortion. On Monday, groups marched in Washington, both in support and in protest of the decision.

With the word "life" on her hat, 10-year-old Mary Reynolds of West Greenwich, R.I., takes part in a "die-in" to represent the alleged 55 million children who have died from abortions in the United States. (Kevin LaMarque/Reuters)

On Sunday, President Obama said in a statement that the court’s decision makes clear that the government “should not intrude on private family matters” and that he’s committed to protecting a woman’s right to choose.

Antiabortion activists, meanwhile, say they’ve had a “breathtaking” year in passing successful legislation to restrict abortions. Charmaine Yoest, president of Americans United for Life, told The Post’s Sarah Kliff that her organization helped pass 28 such laws in 2011.

Follow along with the March for Life protest in Washington here.

Antiabortion activists are draped in a red sash as they take part in a "die-in" in front of the White House. (Kevin LaMarque/Reuters)

See more images here:

View Photo Gallery: The Catholic Church in particular is credited with organizing and driving the anti-abortion movement for decades, but religious arguments shape the pro-choice side, too.