From left: South Florida residents Fred Guttenberg, and Patricia and Manuel Oliver support each other Saturday afternoon at the March on NRA protest in Fairfax. Guttenberg lost his 14-year-old daughter Jaime Guttenberg, to a mass shooter Valentine’s Day at the Marjory Stoneman Douglas High School in Parkland, Fla. — where the Oliver’s son, Joachim Oliver, also was killed. Aug. 4 would have been Joachim’s 18th birthday and his life was celebrated with song, cake and a graffiti wall spray painted during the rally with his image and the message: “We demand to blow out our candles.”