Discrimination against blacks
Discrimination against gays
Probably shouldn't leave a comment unless I have time for a debate.
Being a very christian person, I'm going to bring up the bible to support my answer, where does it say anything in the bible about race? Race is not mentioned in the bible, homosexuality is.
It is illegal to discriminate based on the color of skin. So while I do understand that there are many issues of racism in America, there are far too much more issues of homophobia in the world.