Christine Leinonen, mother of Christopher Leinonen, who was killed in a mass shooting in Orlando, at the Pulse nightclub.
Former Philadelphia Police Commissioner Charles Ramsey is the next speaker. He calls for common sense gun measures.
Ramsey says now, more than ever, "we need a strong, steady leader to stop the bloodshed. A leader to protect our officers from being outgunned by weapons of war, and to rebuild the bonds between police and communities."
Actress Angela Bassett speaks about gun violence and recites the names of the nine people killed in a Charleston, South Carolina, church a year ago.