To add, this didn't really start with the Tea Party. You can trace this violent and racist "New Right" [0] back to at least Reagan and the Kanawha County textbook controversy bombing in the mid 70s [1].
We're seeing the effects of capitalists having pitted laborers against each other in order to undo the New Deal coalition. It has many facets. For a very sympathetic view of coal miners, I highly recommend watching Harlan County, USA, made in 1976:
https://en.wikipedia.org/wiki/Harlan_County,_USA
Coal miners have been getting screwed for generations.
I wonder how many Americans know about the Battle of Blair Mountain. I never learned about it in my history books.