Photos: Prop. 8 Supreme Court Ruling Vigil, SF, 3/4

Thousands of marchers headed toward Civic Center. Buoyant crowd. Choppers, fixed wing aircraft overhead. More photos to come.

Also, as of 6:30 Van Ness is shut down at City Hall due to a "suspicious device."

Follow the jump to view footage of this afternoon's vigil at Casto and Market.