False Equivalency

To reason with someone who would try to equate groups espousing the elimination of other races with groups that exists to fight oppression is like trying to debate the merits of drunk driving with an utterly wasted 17 year old.  There's no basis for a meaningful discourse. Just take away the keys for their own good and the good of others. They'll get angry and lash out, and that's OK, because if you let them get in and drive without doing what you can to stop it, you share the blame for the results.