Need help from the Canadians

I'm hoping one of the Canadians here will help me. I'm trying to remember the name of a book that a teacher read to my class in elementary school. I don't believe it was on the curriculum though. It was about a black boy in Halifax (or rather, I'm assuming it was Halifax...). I can't totally remember the plot. I only remember one scene where he was trying to hang out with a new group of kids (he might have just moved there?) and they were writing graffiti and he had to do it too. This isn't something he normally would have done but he did and he wrote "Remember Africville". I don't believe that the title has anything to do with Africville though.
And that's all I remember. I'm guessing it would have been published circa 1990?