A Rebels bikie who was filmed bashing a sex offender in prison and uploaded the video online has suddenly died.  Bradley Daniele, 29, is understood to have suffered a heart attack and died in Royal Adelaide Hospital on Sunday morning after being rushed to the facility the previous night.   The bikie had briefly appeared in the news for minor crimes but gained notoriety after the then 26-year-old bashed Hamzeh Bahrami, 33, in the Adelaide City Watchhouse in 2019.