Victoria's corruption watchdog has charged two police officers with assault, alleging one repeatedly hit an Indigenous man with a Taser to the head and another kneed him during an arrest in Melbourne last year.

Victorian police are investigating an allegation that a car deliberately drove at speed towards an anti-racism protester during a peaceful community rally of over 150 people in Broadmeadows.

A dramatic dashcam video from Melbourne shows a motorcyclist nearly being run over by a truck, though Victorian police have no information on the incident and the rider's condition is unknown.