Interesting one. To be fair it looked like the police car allowed plenty of space before moving across so hardly a dangerous manoeuvre. Did the cyclist even have to slow down?
The drivers you brake checked/nearly ran off the road may have had children in the car or could have swerved and hit another car with children in it due to your idiotic antics. You really are a fool.
I honestly hope you do it to the wrong person and they drag you out of the car and kick seven shades of sh*t right out of you.
What a dick.. what's the betting they were drunk or some chav who can't drive/think/piss into a toilet without soaking themselves and the rim? Well done for spotting them - they are dangerous.
What I've seen from this driver is absolutely disgusting and should have his licence taken away.