are you actually with organised crime, or simply never had the pleasure of living in a city controlled by gangs?  yeah, prisons are bad, without a trial even worse, but the crime that organised crime commits isn't just devine by their actions.  they decide to be part of a state within the state, apart from us common citizens.  it's treason against the state, and honestly the only fitting punishment is a death sentence. prison is a mercy already.
Italy