A man attends May Day festivities in Oakland, Calif. on Monday, May 1, 2017.none
A woman marches in the Oakland, Calif. May Day festivities on Monday, May 1, 2017.none
Mayor Ed Lee leads thousands on a May Day march through San Francisco on Monday, May 1, 2017.none
Mayor Ed Lee leads thousands on a May Day march through San Francisco on Monday, May 1, 2017.none
Mayor Ed Lee leads thousands on a May Day march through San Francisco on Monday, May 1, 2017.none
Mayor Ed Lee leads thousands on a May Day march through San Francisco on Monday, May 1, 2017.none
Demonstrators gather at Drumm and Market streets in San Francisco for May Day on Monday, May 1, 2017.none
Demonstrators gather at Drumm and Market streets in San Francisco for May Day on Monday, May 1, 2017.none
Demonstrators gather at Drumm and Market streets in San Francisco for May Day on Monday, May 1, 2017.none
Demonstrators block the vehicle entrance to ICE's San Francisco office on Monday, May 1, 2017.none
Demonstrators march on Market Street during May Day in San Francisco, Calif. on Monday, May 1, 2017.none
Demonstrators march on Market Street during May Day in San Francisco, Calif. on Monday, May 1, 2017.none
Demonstrators march on Market Street during May Day in San Francisco, Calif. on Monday, May 1, 2017.none
Demonstrators block the vehicle entrance to ICE's San Francisco office on Monday, May 1, 2017.none
Demonstrators block the vehicle entrance to ICE's San Francisco office on Monday, May 1, 2017.none
Stores are closed in observance of May Day in San Francisco on Monday, May 1, 2017.none
Stores are closed in observance of May Day in San Francisco on Monday, May 1, 2017.none
Stores are closed in observance of May Day in San Francisco on Monday, May 1, 2017.none
Stores are closed in observance of May Day in San Francisco on Monday, May 1, 2017.none
This flyer is for a May Day March in Oakland, Calif. on Monday, May 1, 2017.none
A May Day march took place at Justin Herman Plaza in San Francisco on Monday, May 1, 2017.none
This sign was held up by a demonstrator at the May Day march at Justin Herman Plaza in San Francisco on Monday, May 1, 2017.none
Demonstrators block the vehicle entrance to ICE's San Francisco office on Monday, May 1, 2017.none
This sign was held up by a demonstrator at the May Day march at Justin Herman Plaza in San Francisco on Monday, May 1, 2017.none
This t-shirt was worn by a demonstrator at the May Day march at Justin Herman Plaza in San Francisco on Monday, May 1, 2017.none