I don't know that it's fair to attribute this to Trump (and I voted for him). However, even if it was, why would this make anyone sad? Are you so partisan that you would actually lament the fact that 50,000 people in Pennsylvania are going to have new jobs? Have you become so cold and heartless that you would have people suffer just to advance your own political agenda?
I'm old enough to remember a time when the Democratic Party stood up for the working class; when they were the party of compassion; when they stood up for civil liberties like free speech. Sadly, the party has long since left all that (and me) behind. And if the last election was any indication, a lot of people in formerly blue states think the party has left them behind too, states like Pennsylvania.