I have never had an encounter, like in the video. That I hope that guy was ticketed at least. For an unsafe lane change.
I am sort of not surprised. Why it is shown on the website for the London Daily Mail, and not the websites' for the San Francisco Examiner, or the San Francisco Chronicle.
OTOH: While I agree with the cyclist's frustration. He didn't need to slap the vehicle.
ATST: Like others have mentioned. The driver sure seems' to have issues' with cyclists'.