I'm not a Trump supporter. I hope he doesn't run. I voted against him in the primary last go around, and I will do so again.
But, if you could pause a moment, and look at things objectively, you would see that Biden is equally as divisive as Trump, and the impression is that he is calling for the Left to fight the Right in more than just an election. Side note: Interesting that he put Marines behind him, in uniform, for this speech. How often does he do that for a political speech unrelated to the military?