He's not a leftist. He's an extremist with mixed feelings. A very confused and troubled individual. 

Donald Trump is loved by right-wing extremists, particularly racists, and some of those extremists feel energized by his election. Racists are his people. He has made is very clear through words and actions that the State will treat racism in much the same wink-wink nudge-nudge way that it was treated in the bad old days where people may have been equal on paper, but justice was non-existent for minority groups. Leftist extremism will obviously not be well tolerated, but it never really has been after the Revolutionary war.