Sometimes censorship arrives through an anonymous whisper instead of an angry outburst. Unlike soft or self-censorship, which usually refers to a librarian’s actions to remove, limit, or not purchase potentially controversial materials, this type of censorship is practiced predominantly by patrons. In these cases, individuals do not officially voice a complaint about a material or request its removal; instead, they hide or mis-shelve items they disagree with, rearrange displays, damage or destroy materials, or check items out so that certain titles cannot be used by others.