https://www.upi.com/News_Photos/lp/87b6da7bea155c6a69d2d5f866fbe441/
https://www.upi.com/News_Photos/view/upi/87b6da7bea155c6a69d2d5f866fbe441/May-Day-melee-in-Oakland-California/
demonstration, occupy, police action
UPI
UPI
https://cdnph.upi.com/pv/upi/87b6da7bea155c6a69d2d5f866fbe441/MAY-DAY.jpg
May Day melee in Oakland, California
Police and demonstrators clash during a May Day protest in Oakland, California on May 1, 2012. Police made arrests and threw tear gas. UPI/Terry Schmitt