I believe Trump should fire them, and they should serve jail time. But Trump himself didn't call for violence. The bernie quote was along the lines of "Republicans aren't humans," and after he said that, one of his supporters went after a small group of Republicans, shooting but not killing a senator. Was bernie guilty? No, since he didn't call for the violence.
Now, for democrats that called for violence but aren't sitting in prison. I hope you can denounce them as I have denounced Rudy Guiliani and Lynn wood. Maxine waters said, "If you see anybody from that cabinet in a restaurant, in a department store, at a gasoline station, you get out and you create a crowd and you push back on them, and you tell them they’re not welcome anymore, anywhere."
Hillary Clinton, in 2016, said, “You cannot be civil with a political party that wants to destroy what you stand for, what you care about.”