Hey, let me apologize first. 
I'm sorry that your feelings were hurt. I understand that this can seem insincere given the venue in which we're connecting.  You are right, you deserve to be treated with more respect.  
so, let me try it a different way.  
Saying Trump is a nazi is pretty entry level.  Take your game to the next level.  Pick a specific thing he's done, and compare to facism.  Like how he demanded that Pence overturn the election.  Relate it to something that other facists have done, historically.