Imagine, for a moment, you are a white male somewhere in America who just lost his job at a factory. Your mortgage is in default, your car is being repossessed, and you wonder whether you’ll be able to find a job, much less one that pays a decent wage. You have no particular animosity towards blacks, gays, women, but you constantly hear the message that as a white, straight male, you are the paragon of privilege and that the hardships in your life are irrelevant or made up. You don’t feel so privileged. Are your struggles and fears really so different from those of the minority groups?
It’s easy to see why that person voted for the candidate who acknowledged his fears and against the candidate (and party) who dismissed his concerns because he was not a minority.
In other words, it's not ALWAYS racism. Sometimes it's classicism. The powers that be are always seeking to parlay a come-up, using divide & conquer tactics to pad their bank accounts.
These tactics were Donald Trump's Modus Operandi.