They are the secret symbols bikies from every different club wear on their gang uniforms or in outlaw tattoos and are designed to cause fear or intimidation, and promote a disconnect with society.
A notorious former gang boss used a prison shiv to repeatedly stab a hitman inside a cell at Australia s most secure prison as guards watched on for more than a minute too afraid to intervene.
Notorious assassin Siar Munshizada, serving three life sentences for murder, was allegedly conned out of $15,000 by Helya Yousefi, a woman he met in jail while she was visiting another prisoner.
A secret haul of 27 guns in a car boot four years ago uncovered the strange history of underworld weapons and firearms are often shared between criminal gangs.
Ruthless gang leader and killer Abuzar Sultani kept five safe houses stashed with dozens of guns, ammunition, and even police uniforms before police sneaked inside and found his big mistake.