First of all Bigot as defined by MW: a person who strongly and unfairly dislikes other people, ideas, etc. : a bigoted person; especially : a person who hates or refuses to accept the members of a particular group (such as a racial or religious group)
Conservitives always throw up a black candidate, but they never make it anywhere.
As far as trump, it has been an issue actually. He has a long list of discrimination complaints from his workers. As to your third point, I just guess it's delivery and timing.
The conservative line always has an excuse for it's behavior. They re-write history, and white wash all the parts they don't like. Just speaking from experience, and I have only been around for 35 years. I have only seen prosperity out of a democratic president, and loss under a republican. My main issue with republicans is "Bullshit mountain" as John Stewart put it.
We keep getting told things from the republican party that once checked out, fall to nothing.
They have used human sexuality as a way to fire up their base. They give little regard to others. For every one "Crooked Hillary" story, I can find 10 "crooked trump" stories. The only difference is, no one will listen, and give trump the benefit of the doubt, even when the evidence is stacked against him. Yet, Hillary has been found guilt free in all things thrown at her, and she can't win for losing. (I am not a fan of Hillary, but I would rather have oatmeal for the next four years than an atomic bomb)
If the Repubs put in a real candidate, I would consider them (ahem kasich) But it isn't the Liberals that are passing "Religous freedom to discriminate" acts. They aren't the ones that are passing bathroom laws to hide screwing their working poor with minimum wage caps. Try as you must to push all this on the liberals, but it is the conservatives that are fighting the winds of change.