I've wondered the same thing...are Muslim and Jewish establishments, private business or religious institutions, being targeted? (and yes, targeted is the correct word )
except that they weren't being "targeted". They just got caught time #15 they engaged in the behavior.
In the case of the Klein's, the gay couple were invited by Mrs. Klein to use their shop if they ever tied the knot, only to be subjected to massive verbal abuse by Mr. Klein when he found out it was two ladies who wanted to get married. (I'm sure Mrs. Klein got a good Christian Wife-beating after that.)
When he was told that he was in violation of the law, he had every opportunity to correct the problem. He doubled down and posted the names of the complaintants on the internet, subjecting their family to threats from Christians reminding us all how much Jesus hates the homos (even though he never talked about the subject in the Gospels, but never mind. Jesus hates lesbians. It's in there!)
I also wonder if those who defended the violence and shutting down of free speech on the campus of a public university by declaring that Coulter could always use another venue would apply the same principle to a private business. There are other places to buy a cake, no doubt.
Berkeley isn't a public accommodation. A business is. Coulter was not paying Berkeley to speak there. They were having to spend money to make it safe for her to speak because of all the obnoxious racist shit she's said over the years.
So the question is, would the potential expense and risk to our community be worth listening to Coulter spew whatever garbage she was going to spew... and the answer was.. no.