Stop Handgun Violence is a Boston, Massachusetts-based 501(c)(3) non-profit organization that works to reduce and prevent injuries and deaths caused by firearms in the United States.

[2] Stop Handgun Violence was founded in 1995 by Boston developer John Rosenthal with Michael Kennedy, son of assassinated former U.S. attorney general and presidential candidate Robert F.

[3] Rosenthal says that he was inspired to cofound the group when "I learned that 15 kids under 19 died every day in this country from the only consumer product in America that is not regulated.

Stop Handgun Violence has implemented several media and public awareness campaigns, the centerpiece of which is America's largest billboard, located on the Massachusetts Turnpike adjacent to Fenway Park in Boston.

[9] Georgetown University law professor Randy Barnett said, in regard to Stop Handgun Violence's response to the Columbine High School massacre, that "It's impossible to push a button and make firearms disappear in this country.