No, groups of people fall into protected categories because of a history (and ongoing practice) of discrimination against them.Right, Idont understand the law... groups of people are "special" because of how they like to get their "junk off"... what's next? Anyway....the civil rights act doest go into that much detail so whoever cited it is a retard.
And it's perceived sexual orientation that's protected. It's not about how they have sex. It doesn't even just apply to homosexuals; the protections apply to heterosexuals, too.
The Civil Rights Act is relevant because it negates the cry from the fundie cretin on board that a business owner may refuse service to anyone. A business owner may not. This is where the existing law, the Civil Rights Act, comes into play.
But you do not understand the law. And various federal and other laws and court decisions since '64 have expanded the protected categories to include things like veteran's status and sexual orientation.