Commenting on 2, yes, it shouldn't be a problem at all. In the UK, police don't carry lethal weapons routinely. In fact, knowing a few of them who are active and a couple retired, even the use of a baton is usually not required at any point in their careers. They rely more on teamwork and communication than physical weapons. I also know an officer from an armed unit. He says he's bored 99% of the time as he's only of use to a tiny amount of call outs and has never had to fire his weapon while on duty in the public.

As to 3, the UK police do escalate sometimes, and I think some of their behavior is disgusting, but at least it results in non-lethal harm (and hopefully disciplinary action) when there are no armed units involved.