R,
It's not that there aren't protests, it whether the British media chooses to run with them, whether they fit this week's story arc. Dogs haven't stopped biting kids, but they don't make the papers anymore. Similarly, I doubt protests have stopped in Rio, but that's an old story now.
I walk up Whitehall once or twice a week at the moment, I can assure you that there are protests on Parliament Square or directly across from Downing Street every single day about all manner of conflicts and issues.
There were thousands of Sri Lankans there a couple of weeks ago pleading for help that they are being ethnically cleansed by the majority demographic. It didn't make the papers needless to say as it didn't fit with the rest of the news.
Good post. Remember Egyptian protests recently? 3 days later not a thing mentioned in the news.