Open this photo in gallery: Michael Mostyn, head of the Jewish community organization B’nai Brith, at a gala in Edmonton in 2018.Supplied When Michael Mostyn saw some fourth graders beating up a fellow first grader in the schoolyard of Toronto’s Associated Hebrew Schools, he stepped in to fight the bullies. When he returned home, beaten and bruised, his mother encouraged him to arm himself and take up tae kwon do, and by Grade 7, he earned a black belt. While at a high-school soccer tournament, he experienced his first antisemitic incident – a knife was pulled on him, and he...