I think you mean anti forced/mandated Covid Vax people, anti-vax is a inaccurate label in many cases unless they were behaving this way pre covid.
As for that type of behavior...
That is not cool, misguided and uncalled for.
I guess some people are just assholes. On both extremes IMO. Leave all individuals alone unless they have directly come at you IRL. Direct your frustrations at the officials putting the policies in place, not the individuals.
I still 100% support those protesting Mandates, and Govt overreach.
Some really ugly behavior is occurring from the extremes of both sides. It isn't just a one way situation.