Look, while it's all well and good to make a clear statement like, "If you think that everyone who is Mexican sucks, you're an asshat", it loses all meaning if you then go on to basically say "Mexicans suck because..." and then go and allow and even somewhat encourage others to say similar things in your comment thread.
See also: "I knew a Mexican once who did (something bad). It's therefore logical and totally non-racist that I now don't trust any Mexicans and feel the need to share this story anytime anything Mexican-related is brought up."
I'm sure it's fun to pick on the Amish and Native Americans, too, but can we maybe not do that anymore? Thanks. Glad we cleared that up.