Just as some Democrats are Socialists, Marxists, Antifa, criminal looters and rioters, etc. and some are not, so too some Republicans are white supremacists, neo-Nazis, misogynists, xeno-islamo-and-homophobes, and some are not.
When we are talking about neo-Nazi protests with protesters chanting "white power" and "Jews will not replace" us vs. racial justice protesters, it is not the case that there are good people on both sides. There may be bad people on both sides, but the racial justice protesters are the only place where one will find the good people in that scenario.
When we are talking about criminal rioters and looters who are taking advantage of the distraction of racial justice protests to enrich themselves at the expense of innocent business owners vs. the police, it is not the case that there are good people on both sides. There may be bad people on both sides. but the police are the only place you will find good people in that scenario.
When we are talking about Democrats vs. Republicans, there most certainly are good people on both sides. Quite a lot of them in fact. Sadly, they tend to be drowned out by the bad people. On both sides.