That sounds like poor police work as much as digital rumors being the problem. When you're expecting a riot, concentrating a bunch of people together and remov

That sounds like poor police work as much as digital rumors being the problem. When you're expecting a riot, concentrating a bunch of people together and removing any way for anyone to leave (even people not kettled couldn't leave due to transit being shut down I presume) sounds like you're trying to make a riot. It sounds like they read the textbook on dealing with riots, but forgot to read the part where you're only meant to do it when people are actually rioting.