Liberation is in the fact the internet's all-seeing-eye works both ways; we can see them.
Previously such thuggery would have been impossible to report supported only by word of mouth testimony.
This is the influence of "disruptive technology". The Police are clearly used to a different set of rules - they didn't expect the encounter to be recorded.
Your Twitter or Facebook is no different to "The Sun" newspaper. You just have a smaller audience.
Social media - kills media.
If politics has suddenly changed from being something which was "simple" and clearly "a concensus" that only means you shared the bias and ignored your opposition.
As a child I used to love listening to my Dad take the piss out of "wankers" on the telly. I assumed that was how most watched it; with a proverbial pinch of salt.
The full consequences have not yet played out but they suggest a different world to the one predicted in 1984.