“As of right now we currently don’t truly understand the why … as far as motivation and any type of relationship".

This same story would dominate the headlines for a week if the races were reversed. Instead, it’ll be gone by tomorrow.

Doctor bicycling on Pacific Coast Highway mowed down, stabbed to death by black motorist screaming about “white privilege”.

An ER doctor was killed after being mown down by a Lexus and then stabbed to death by the driver in an apparent road rage incident.

Dr Michael Mammone, 58, was cycling on the Pacific Coast Highway, California,  when he was run over by a white Lexus on Wednesday at around 3pm.

The driver of the vehicle, Vanroy Evan Smith, 39, then got out of his car and stabbed the cyclist multiple times in the back, with brave bystanders tackling him to the ground.

Witnesses say he was holding a BB gun when he approached Dr Mammone, and was screaming racial slurs about 'white privilege' , according to ABC7. 

Shocking video shows the moment Smith, a trained accountant, careered into the cyclist, with police claiming that the pair were complete strangers.

Dr Mammone has worked as an ER physician at Providence Mission Hospital in Laguna Beach, since 2011 and graduated from the Keck School of Medicine of The University of Southern California in 1993.

He also occasionally worked out of Mission Viejo and the Children's Hospital of Orange County in Santa Ana.

The hospital said in a statement: 'We are stunned by this devastating tragedy. The entire Mission Hospital family is grieving over the loss of an incredible physician and friend.