When does pive tolerance and storage of questionable material endorse such material?

I'm thinking in particular of the case of Wikipedia and its policy of no censorship. For example, Wikipedia contains some violent and/or disturbing images. Is Wikipedia responsible if, say, a kid stumbles on the Thích Quảng Đức article (< a href="http://enwp.org/Thích_Quảng_Đức" rel="nofollow"http://enwp.org/Thích_Quảng_Đức/a >) and was frightened? What if someone imitated the monk? Is censorship compatible with the neutral presentation of information?