My mind is boggling at the number of people who were killed by communism over the course of the 20th century.
So, shall I engage in similarly immature tactics next time a communist or Socialist Workers etc. event happens?
No.
Because people have the right to congregate at events.
Because I don't want tit-for-tat tactics at events that I might want to attend.
Because trying to stop people from attending the events only makes them feel more passionately about the cause in question--"Look how our enemies are shutting us down and trying to oppress us."
Because if you disagree with something, the best way to disagree is to let people go ahead and attend what events they like, and then argue constructively about it. You might even change some minds (which this kind of stupid tactic is never ever going to do).
Because we should show courtesy towards others even if we disagree with them.
Because most people who attend communism events are not there because "Bwahahaha, I just love the thought of Stalinesque style forced labor camps and genocide!!!" They are there because they believe that Stalinesque style forced labor camps and genocide represent a perversion of communism not the real thing, because they think that there are other good things in communism which should be celebrated, because they believe that communism might work better if more people supported it or learned about it, or in some cases they are just curious and want to know more or their friends are going. You can agree or disagree with whether these are sensible ideas or not, but it's possible to disagree without hating on and slagging off the people concerned.
Similarly, I don't think that many of the people who want to see the Pope are grinning gleefully about child abuse--most, if asked, will say things like "All organizations have problems and that is just one side of the CC," "My love for the CC is about the individual local church members that I am familiar with and who are not child abusers etc." or "If the church has problems, surely it's better that good people remain involved so that we can improve things?" Again, those arguments might or might not be sensible, but we can still show personal respect towards the people who express them, and recognize that most of them are not people who support child abuse etc.