It was a re-tweet, and grandpa was being ironic toward the blue hair that called him a Nazi. Pretty hilarious actually. But of course being ironic is a leftist sin now.
Trump did nothing wrong. What needs to be called out is brain dead political correctness and Aunt Jemimaism.
The growing wealth of the middle class, and increasing living standards for all classes of people that resulted from the rise of industrial capitalism in Western Europe, led people to be LESS inclined towards violent revolution and social unrest; completely opposite of what Marx had predicted.
With the failure of Marxism apparent, the revolutionaries looked towards less developed agrarian societies to test their theories(Russia), while the socialist/leftists who remained in Western Europe sought to reform Marxist ideology.
So they replaced the concept of race with class. They also flipped means and ends; for the Marxists, dictatorship was the means to achieve socialism, while for the Nazi/fascists socialism was the means to achieve dictatorship. Fascism Nazism and communism all have their roots in Marxist ideology.
...not necessarily, but probably