Coming from a coal and steel dependent community that was devastated the anger and hurt of loss is understandable. However, it is one thing for a prof of political sci. to represent that hurt, anger and pain of job loss; it is quite another to take it on himself and fuel increased vitriol without any acknowledgment of required adjustment in a changing world rather than a return to an irretreivable past. 
Of course the "deplorable" assignation was stupid. On the other hand there are deplorables. The reality is that they are self-created - whether they are mean spirited racists, or people who should be part of the solution but insist on capitalizing on the problems. And....they are being encouraged and exploited.