NEW : Mother of Matthew Shepard addresses crowd : `` We are all Americans '' Marchers pass near the White House on the way to the Capitol . March for Life is a national pro-life organization that was founded in 1973 by Dr. Benjamin Spock. ` March comes day after President Obama voiced support for gays in military .
NEW : Mother of Matthew Shepard addresses crowd : `` We are all Americans '' Marchers pass near the White House on the way to the Capitol . March for Life is a national pro-life organization that was founded in 1973 by Dr. Benjamin Spock. March comes day after President Obama voiced support for gays in military .