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Indeed, I'm sure more went on than we know - but hardly edifying, though, was the video of the policeman running about just behind the line, looking for gaps through which he could wield his baton on the protesters, and even leaping on the shoulders of policemen in front of him to do so.
I have every sympathy for the police who have to face some of the greatest abominations, and manage usually to stay sane under extreme provocation. However, I do have the feeling that on occasions more than reasonable force has been used by them, and while I appreciate that they have a very difficult job indeed, it's nevertheless the case that this cannot and never should be acceptable.
Perhaps it's a good thing that there are the technologies these days to record what happens - it begs the question otherwise of exactly what the police might be getting away with. At the same time, however, one would hope that these technologies would also reveal what the police have to put up with. One question certainly raised is that of the individual responsibility and attitudes of people who just maybe attending such events with violence in mind.