Weeelll... that depends on a lot of things. Any jammer with the power to work over a meaningful radius in this context is probably going to throw out lots of spurious emissions in neighboring bands.
However, there is a FRS band which is the same as the US.
Moreover, the bands used by "push-to-talk" radios are ones that transmit reasonably far for lowish power and penetrate walls. No reason to think they'll be different worldwide.
The police can blame the protesters for all the troubles - block traffic, stopping commerce, blocking cell/wifi/BT service. From what I read, not much different than the police strategy used the 99% protest in Wall Street.
I don't recall the US banning twitter or censoring any social network. No prohibition of coverage.
Not to mention there was a tremendous amount of sympathetic coverage. Time 2011 person of the year was the protester. It was a huge conversation that entered the common narrative.
Apples and Oranges. Yeah, there are best practices for dealing with crowds and there needs to be security at huge protests. The cloak and the shield is a very fine line.
I know for a fact in Canada there was no wifi/cell/BT blocking. And I cannot find a reputable article the provides any evidence that this occurred.
He is saying that they blamed the protestors for inconveniences caused by police actions not that the police in the US blocked cell service.
The strategy for dealing with the protests in the US was just to wait them out and then when the media got bored they sent in the police to clear out the camps while people weren't paying attention.
