Specifically, the ones that make the news. Here's the standard in specific: During the Obama election(s), there was news going around about the Black Panthers scaring voters by brandishing weapons. I would say if Trump's cadre, or "Antifa" (which isn't really an organization in the sense of officially existing last I knew) or BLM (which -is- an organization) did the same, that would be the "voter suppression" I would be talking about.
Also, Republicans don't distance themselves from their political extremes. They use them to their advantage. It's how the TEA Party became part of the GOP, which led to the Trump takeover of the GOP. GOP leaned into Trump in 2016 because it saw the political benefit. Now, he's useful to be kept an arm's length.
Democrats did the same thing with BLM, ANFITA, and Occupy Wall Street (Remember them?). Except the problem is, with at least Occupy Wall Street, was if these movements wanted to influence government, they had to go the way of the TEA Party. Occupy, especially, seemed to believe that it had its own government and could play by a unofficial (and at times Constitutionally illegal -- they wanted to punish bankers for doing what was legal at the time, remember?) set of rules. BLM was absolutely fine until it splintered and you have like the regular BLM and the extreme BLM, and no Democrat I know wants to go the route of the extreme BLM -- which means they have to distance themselves from BLM as a whole since the extreme wing is the most visible. Then, you have ANTIFA, which Biden discarded as "an idea.," if you remember. If you read between the lines, if ANTIFA is "an idea," then you can't really negotiate with them or speak with them because they don't exist in a form that you're able to talk to. Yes, it minimized some of the misbehavior, but it also delegitimized them as an organization that he could approach in the same breath.