Director joins Oprah, Clooney in funding upcoming rally; Gal Gadot, Barbra Streisand, Mayim Bialik speak out in favor.
High school students hold up signs bearing the names of the victims of the shooting at Marjory Stoneman Douglas High School as they march for safer gun laws(photo credit: JONATHAN DRAKE / REUTERS)ByAMY SPIROUpdated:
