One reason that purging of the past is so intrinsically tied to authoritarian regimes is because authoritarian regimes do not want people to think for themselves. They want to enforce their views and only their views with no possible ambiguity or counterpoint. This is the danger of flirting with authoritarianism, as I feel we have been doing in trying to purge the past. Once the momentum for 'cultural purification' grows, you may find that where you draw your personal line in the sand is not where the rest of those pursuing such ends choose to.
Why would it be hypocritical to go be against another user of the tool?
Are politicians hypocritical to have opposing ideas?
The U.S. freedom loving founding fathers participated in not only the legalization of slavery but also the genocide of native americans. Should we lay those sins at the feet of democracy and capitalism as a whole?
I'm not accusing you (mc32) of being hypocritical since I haven't seen you make any comments saying that we should rip out old confederate statues because they represent slavery.
However, (let me reiterate that this isn't an attack on you, mc32), I think we as a collective internet need to rethink how we feel about removing artwork if it represents something bad. It is not okay for us to be okay with ripping out some untasteful art but not others, simply because some bad art is "left" and other bad art is "right."
Before you go jumping on me about how slavery is different than communism, remember that communism is responsible for nearly a hundred million deaths, which puts it near the level of slavery in terms of harm it has done to humanity (even if they aren't directly comparable).