i need to be careful.
there are plenty of black people in canada. and, as dawkins says, we're all africans.
but, the vast majority - i believe over 90% - are recent immigrants from the carribbean, with the balance being from africa directly, since 1970. there were small communities of black loyalists in nova scotia and later on in alberta, but we're talking about very small groups of people. and while canada is famous for the underground railroad - of which i live on the terminus of - the fact is that very few of the freed slaves stayed in canada, with the overwhelmingly majority choosing to back migrate into the northern states. people missed their family, and no doubt felt out of place in what was then an almost entirely white culture, but the dominant reason in the literature is the weather. seriously.
slave descendant african-africans in canada are honestly a fraction of a percent of the population.