The other thing you can’t say is that M. Wente, this article’s author, is a plagiarist.
Every culture has its unacknowledged taboos—the things you are forbidden to say or do in polite company, the accepted truths you are not allowed to doubt. You might think that a liberal, open-minded country like Canada would be free of such taboos, but you’d be wrong. In spite of our belief in our own enlightened tolerance, some things are simply not open to debate. If you try, you’re bound to shock the neighbours.