MAGA is not Trump... Making America Great is based on the founding principles of this country... not the evil racism and marxism of the left. To "Make America Great AGAIN", it had to have once been great, which is was... but years of leftist policies made it less so.
Trump popularized the phrase, but it's just an extension of the patriotic Tea Party movement that was here well before Trump... a movement that believes in freedom and equal opportunity for all. Opportunity not outcomes. Equity and equal outcome goals have been a major part of the problem.