David M. Shribman MONTREAL — It doesn’t look like a crucible of power. It occupies a full block on Sainte-Catherine Street, not far from my barbershop, a sushi restaurant, a bagel store and two dry cleaners. Its entry looks grand — three sets of oak double doors — but otherwise, there’s nothing remarkable about the pale brick structure. It’s a high school like so many … [Read more...] about Shribman: Kamala Harris’ Canadian roots