This sounds like the downtown Cairo demos:
The tactic of “kettling” – holding protesters and anyone caught up in the protest behind police lines for hours on end without access to water or toilet facilities – came in for particular criticism. Police used this tactic against G20 demonstrators outside the Bank of England on Wednesday afternoon.
Thousands protest in London and other capitals against the G20.
Web 2.0 tools were used widely by activists, according to the Guardian…
Updates on the event and messages of support were quickly posted on social networking websites such as Twitter, which organizers encouraged people to use to provide live coverage. One blog dubbed the event as “Protest 2.0”
