So, just to be clear, I agree with you completely, one hundred percent. But in the last couple of days, reflecting on the phenomenon you're observing, and trying to figure out why I become so frustrated, I've realized you could flip that around completely, with very negligible edits:
"... a lot of people in this country feel like they're being smugly dismissed every time they open their mouths. That the 'white trash' have no interest in getting to know them, understanding their problems, or building a society that is inclusive of them. They're used to being lectured by people who don't even know them, who think their entire community is insignificant and irrelevant and backwards and stupid. They're used to being called 'elites' and worse, just for existing."
The smugness of the liberal establishment bothers me, and is one reason I didn't vote for Clinton. But I find myself a recipient on the opposite end of that bigotry line all the time also. Not sure what to do with that observation, but it's very salient to me. Explaining it doesn't make it ok, I suppose, or something along those lines.