Firemen
Men whose work is not to put fires out but to set them — burning books. By turning knowledge to ash, they preserve the “peace” of society.
Source
Fahrenheit 451 Ray Bradbury / 1953
A society where owning books is forbidden, and any that are found are burned. Montag, a fireman whose job is to burn them, meets someone who leads him to question the thought and the words he has helped destroy.