There are literally thousands of sites on every possible theme . The theme I am interested in now is Cowboy tattoos. In wandering about I also came across a bizare news story on BBC site about Russian criminals and their perverse and anti establishment use of tattoos. EG Women of colour
Many female criminals also tattooed themselves, partly as a rebellious reaction to the establishment and partly to distinguish themselves as what are known as vory v zakone (thieves in law). These women were photographed at a corrective labour colony at Kungur, near Perm. BOG
God of crime
The Russian word for God - Bog - is also an acronym used by criminals. It means "I shall rob again".