[jimsug]

I'm not sure that refusing a gay wedding cake to a straight person would avoid your action as being discriminatory toward a protected class, since that's the effect. Perhaps it would.

I also don't know that I would want Trump to be silenced, since he's often his own worst critic.

I don't think Twitter is stopping him from saying bad things, either; in fact, they're pretty explicitly letting him say things, and they just happen to have something to say about what he's said, too.