On September 17 , gun control activists and relatives of victims of shootings that occurred at Sandy Hook Elementary School ; Aurora , Colorado ; and the Oak Creek , Wisconsin Sikh temple , came to Washington to protest for stricter gun control . The activists said they hoped that the Navy Yard attack 's proximity to Capitol Hill would motivate lawmakers to act to impose stricter background checks and close the gun show loophole
Oak Creek , Wisconsin Sikh temple
Wisconsin Sikh temple shooting
Washington Navy Yard shooting