This The Joker fan art contains
holding cell, penal institution, and penal facility.
There might also be
jail, jailhouse, gaol, clink, slammer, poky, pokey, cell, jail cell, and prison cell.
This mini-documentary covers the character's origins, Alan Moore's Killing Joke, Joker's most famous portrayals, why he can't be killed, and how his influence infects the minds of people both real and make-believe. From Birth.Movies.Death. @ YouTube.