They generally beat up people they claim are nazis. These days, you are typically accused of being racist just for being conservative.
They also tend to get violent when their targets are disarmed and/or when the police are present to control it, which is cowardly.
Now, even if someone is a Nazi, besides the fact that people like myself are accused of being Nazis often even though we are not (I'm pro-gun and my boyfriend is not white and yeah leftists sure don't like that I'm more libertarian), you either believe in following the law when you strongly disagree, or you don't. If you are going to punch a nazi, sign a medical waiver, and fight fairly.
There are so many laws that are not followed by both sides because people think oh I know I'm right so this is an exception. The virtue is to treat people equally even when you do strongly disagree.
ALso, while being for genocide is obviously wrong, there is some truth to what the Right says. It is discrimination to give someone an advantage in hiring just because they are not white or male, especially when that person is an immigrant. Also I have lost my job after generously training an immigrant who was black, because they worked hard. I'm concerned with immigration, not liking to lose my job doesn't mean that I agree with everything Trump does, or that I'm racist. Of course, due to my build and body language, I have not been attacked by Antifa lol.
The thing is, they generally beat up those advocating genocide against people who don't look like them.