Researchers looked at over 13,000 protests across the country starting in April 2020. And found that police used things like batons, tear gas, and rubber bullets against protesters at more than 500 left-wing demonstrations (including Black Lives Matter). But similar treatment was only documented at 33 right-wing protests (including those that were pro-Trump).
https://www.theguardian.com/us-news/2021/jan/13/us-police-use-of-force-protests-black-lives-matter-far-right