People comfort each other as they mourn at one of 17 crosses after a candlelight vigil on Feb. 15, 2018, for the victims of the shooting at Marjory Stoneman Douglas High School, in Parkland, Fla.
People comfort each other as they mourn at one of 17 crosses after a candlelight vigil on Feb. 15, 2018, for the victims of the shooting at Marjory Stoneman Douglas High School, in Parkland, Fla. Credit: AP FILE PHOTO/GERALD HERBERT

Guest columnist Rob Okun: Will men organize to end gun violence?