If a gay photographer refused to photograph a heterosexual wedding because he only wants to do "gay weddings", would they consider that to be discrimination? I'll bet not, because straight people are not likely a protected class. If that is the case, then the anti-discrimination law itself is discriminatory.
In the eyes of leftist some people are “more equal” than others.
You wont find a greater resist than a leftist politician and/or judge.
Lesbian TX Judge Refuses To Marry Straight Couples
http://newsone.com/1895925/equality-lesbian-texas-judge-refuses-to-marry-straight-couples/