Um, 90% voting for Democrats since about 1934 tells a different tale.
And Democrats only cancel non-Democrats for blackface. We've seen this time and time again. For instance, Joy Behar wore it and still has a job on The View. Not a chance in Hades Meghan McCain still does if she had done the same.
You obviously don't know the history of both parties if you so casually throw them both in the same bucket. That is just about the easiest argument in all of American history to refute. If you honestly don't know I'm happy to break it down for you.