These violent, sick murderers and child sex monsters are out on our streets after being paroled in the past two years. One took part in a gruesome killing where their victim's head was severed with a tomahawk and used as a bowling ball and a puppet. Another was caught on hospital CCTV smothering her baby in its cot, and one is a notorious former bikie involved in a shopping centre shootout. We look at six of our most notorious killers and paedophiles released onto southeast Queensland streets in recent years. It considered a massive 6511 parole matters last financial year and released 2658 prisoners on parole.