Have you considered that these are not real supporters? What they want is to sew division, split minorities (i.e., other Americans) from us, and prevent them from joining our movement. They will spend a tremendous amount of resources on this one idea as it is effective.

They will use every bot, troll farm, and useful idiot who doesn't know they are being used. Why sort them out? It is all the same entity that opposes Trump's positions and policies in the most divisive manner possible.