A Toronto ballpark. A banner with a swastika. And a racist mob armed with bricks, bats and lead pipes. The story of the Christie Pits Riot, which occurred 90 years ago, is now being taught to students on the very field where Anglo-Saxon Protestants battled against Jews and Italian immigrants in what remains Canada’s largest race riot. “Seeing it happen in front of me made me realize this is much more important than I thought,” said Hanah Isse, a Grade 8 student, after watching a live interactive theatrical production about that disturbing chapter in the city’s history. Isse, who attends...