Who Watches the Watchers?

It is not just US SWAT team raids. Here's a report on English policing, also from RT:

Police tasered and handcuffed a blind two-time stroke victim in northern England, reportedly mistaking his walking stick for samurai sword. Colin Farmer, a retired architect who is 61 and cannot move unaided, was on his own and walking down a street in Chorley, in the county of Lancashire, on a Friday evening, when the incident happened.