I'm curious how this could even happen in England, I thought their police force was totally different from the US? I thought they only used guns as a last resort instead of as a constant threat of their gangster-style authority? was this some sort of very strange circumstance? was the cop who did it some kind of deranged murderer who somehow infiltrated the police force? or are cops around the world just not as different as I thought?

edit: this wasn't meant to make a statement about English and American cops being similar, I'm just an idiot. was only trying to ask for more context (which I have now gotten).