Taking the MAGA slogan and relating it to Jim Crow is giving Trump way too much credit. He doesn’t strike me as the type that thinks that deep. He is an attack dog and he likes playing with people’s emotions.
I think that's the main point. MAGA was never a concept of American greatness; it was meant to target Trump's base's sentiments, and their fear of loss of "greatness". In order to figure out what MAGA meant best look at how it was "understood" (let's be charitable) by Trump's White base in light of the very recent past in 2016.
Remember the irate howls when Michelle proclaimed she was never as proud of America as she was the day her husband was elected President? As a pretty direct rejoinder, Trump's White base elected to MAGA. That invokes two wildly different concepts of greatness - two wildly different concepts of America, really - with the American Birth Defect sitting right in the middle, gloating over the conflagration.
I agree, however it is being way overthought and over analyzed. I’d bet the farm that Trump didn’t think all these angles through. It’s just a simple slogan. We should let it just be that
I tend to agree, and would still reinforce your "he likes playing with people’s emotions." And he may not know anything about anything, but how to do that he does know. Of course, people's emotional reactions play out before the background of their societal knowledge, however intuitive, and thus the analysis of what's going on, and why it arguably worked, may still be fairly complex, even while the goings-on played out on the most basic emotional level. Let's not forget, though, that Trump's henchmen, with some impact on the course of the campaign, from Bannon to Mercer and on to Manafort sure have put in a heck of a lot more intellectual work than the Buffoon-in-Chief.
Whatever... look around on here: I bet it is no coincidence that the most virulently racist of the goofs on here are also those most excited about the MAGA slogan. None, of course, have a clear understanding of what it is supposed to mean.