Go to any water park or beach, and you'll immediately notice that about one out of three people has some sort of ink. Tattoos are so popular that even small towns across America have their own tattoo shops nestled among the local pubs and other small businesses. They may be mainstream, but there's a reason tattoos started out as symbols of counterculture. We take a look at the history of tattoos and other extreme body modifications, including the times tattoos were actually banned.