Yes, the people who use violence to stop genocide advocates from enacting their goals and the genocide advocates are equivalent sides of a coin. Good job!
It can be the right thing to do, but we are a far way off from racists enacting their goals. The rally the racists held is a sad display and shows a clear sign of what could happen. That said, it was a rally and the call to violence is a bit premature. Keep an eye on them for sure, because groups can go violent quick, but don't be preemptive because that is just going to escalate.
Calling for genocide is bad, and anyone that questions that has to be mentally disabled in some way. Calling for something is not as bad as doing the act though, and we should try and prevent needless violence. If/when they move from calling to doing like the guy who drove through the crowed did, then by all means act. Just don't call for violence before all other things are tried.