Open this photo in gallery: Pro-Palestine protesters wave flags facing a pro-Israel demonstration in front of a synagogue hosting "the Great Israeli Real Estate Event," in Thornhill, Ont., on March 7.Frank Gunn/The Canadian Press Demonstrators demanding a ceasefire in Gaza often chant: “From the river to the sea, Palestine will be free.” The river is the Jordan, the sea is the Mediterranean. Between them lies Israel. To Israelis, the implication is clear. The demonstrators are calling for the eradication of their state. Israel, of course, was founded in the aftermath of a campaign to eradicate the Jewish people. So “the...