Getting multiple reports on this comment for a variety of reasons, I'm leaving it as I think people are reading more into the comment than is actually there.
"Make an example of him" is not a call to violence. Publicly pulling his visa is, indeed, making an example of him.
I'm also not sure how you construe this as supporting a neo nazi unless you assume OP is being sarcastic when they say "fuck this guy for having or supporting the wrong ideas" and "intimidate anyone who might want to believe things the crowd doesn't approve of."
This is right inline with the American notion of "Make Racists Afraid Again" which has been bouncing around since Trump 45 at least.
I got it, the fact it's poorly done makes it not funny.
Here's a good one: