In 1935, the "first modern American race riot" took place in Harlem. In 1935, the police were called on Lino Rivera, a 16-year-old Black Puerto Rican, who stole a pen knife from a dime store.

Here's a few clips from the 2010 Heart Attack protest, which saw anti-Olympic activists march on downtown Vancouver, cause damage to commercial property, and clash with police in riot gear on the ...