You can't censor "bad" things and not censor "good" things. Cos good and bad is arbitrary. In some cultures a wooman without hijab on photo considered worse than a chield porn (Mohammed has 12 y.o. wife). Do you think we must delete all womans with a bare hares?

We know what we like and what we don't. But we don't know what bad and good, cos no such things as objectively good and bad exists. So if you censoring something (anything), you just forcefully shutting up those who a weaker than you are. Censorship is a tool of tyranny.