You bring up a ponderable position. No doubt some Trump supporters do not receive kindness in response to their expression of their thinking. Perhaps it is because the responders have not experienced the very kindness you are asking of them. 

Both sides could do better on the kindness issue for sure. Perhaps if both sides would back-off the name-calling and realize they have agreement that there are problems to attend to, we could then move forward together in ways that benefit both sides as a whole.