A campaign donation is not political speech. It's public by law. A law that now shows clear conflicts if the internet mobs are going to be after people based on them.
The ways you are defending are the textbook definition of bigotry. I agree that they shouldn't have a place in society.
Anyway: I'm unclear why it's inappropriate to pass judgment on people based on their political speech.
Also, you're playing that trick with the word "intolerance" that people sometimes play... There's "racial and sexual intolerance," which should be weeded out. It has no place in our society. But there are all sorts of "intolerances" which are great! For example: We should be intolerant of things which drag people down and ruin lives. Disease. Scientific illiteracy. Lack of the freedom to marry whomever one wishes. Bigotry.