So this went down in my class today.
One student gave this big impassioned speech about how his infant daughter, who is half-Mexican and half-white, is the future of America, and that we will continue to see more mixing and people will be ok with it. It was nice and everyone else jumped in immediately with platitudes ("yes, our children ARE the future!"). Then one white guy raised his hand and said this:
"Yeah, I totally agree and I hate to use this example but it's like dogs, you know, you have to look way back in the line for a pure breed because of all the mixing."
And then there was a great silence...
And then I had a private conversation with the student about thinking before he speaks and how it's not a great idea to compare humans to animals no matter how innocently the comment was intended.