A Head Hunters gang member attacked and knocked out an innocent motorist who had a "minor crash" with another gang member during the memorial ride for motorcyclist Johnny Danger.
Police are appealing for witnesses to the "unprovoked, malicious assault" which took place during the memorial ride for Danger, who died in a fatal crash on April 25.
Detective Senior Sergeant Marcia Murray said the assault took place about 9.40pm, on April 27, when about about 12 Head Hunter gang members on motorcycles were riding along Coronation Rd in Hillcrest.
"One of the gang members had a minor crash on Coronation Rd with a Nissan ute which was not part of the memorial ride.