I find it absolutely astonishing that people still can't figure out why Trump won. Surreal really. We could go through a laundry list of reasons, but I'll keep it simple and boil it down to two points: the economy and the warfare state.
If you have been following the real "fake news" i.e. mainstream media, you would be lead to believe that everything is awesome. They have essentially served as Obama's mouthpiece. Funny thing about propaganda is that it can't stand up to reality. So, when half the country is poor, 95% of the economic gains since 2008 have gone to the top 1%, and the real wages for the rest have declined (along with the loss of homes, jobs, and security), they are going to call out that bullshit.
The Democrats even doubled down on their arrogance by referring to the all the malcontents as deplorables. Let's get this straight; they pushed the TPP, NAFTA on steroids; Wall Street unanimously backed Clinton; the DNC was held at the Wells Fargo Center, the same Wells Fargo who just recently ripped people off and committed mortgage fraud; you have Warren Buffet, a major investor in Wells Fargo and recipient of massive bailouts from the 2008 crisis, actively supporting Clinton. They obviously have an extremely low opinion of the electorate.
The economy is shit for the majority of the people, infrastructure is crumbling, healthcare costs are crushing them, but there is no shortage of money for the military. We can spend $500 million on illegally training five "rebels" in Syria, but we can't allocate $120 million for Flint. Under Obama we have illegally bombed seven countries, and even ran out of bombs to drop in Syria (a year before Russia was legally invited), all paid by the tax payer.
The more astute saw that Clinton was a war hawk that was going to lead us to WWWIII. Imposing a no-fly zone in Syria would do just that. For goodness sake, Negroponte, Albright, and Kissinger supported her!
They don't need to be economists to realize the all the growth has gone to Wall Street and the Defense industry at their expense. The apologists are quick to point out that Trump conned them. He offered hope and change just like Obama, and he will most likely turn out to be a conman like his predecessor. But just as important is that they did not vote against their own interests. The Democratic "Bully" Party gave them a big Fuck You and they responded in kind by either not voting for them, or at all.