I was once sectioned by the police for my own safety. Literally wouldn't have done any harm to anyone, I was just trying to harm/kill myself. They tried to fingerprint me (which I know is illegal) and when I tried to complain and said they had no legal basis for doing so they simply said "we don't know you're not a criminal". When I tried to resist they restrained me, forcibly took my extra clothing and shoe laces off me and then threw me in a police cell by myself. I sat weeping, terrified, for 24 hours by myself.

I was 19.

This is how they treat the "most vulnerable" in society.

EDIT:

Someone replying to this post is accusing me of being a liar about the fingerprint stuff and throwing stuff around about my "story not adding up" like their some internet sleuth. Honestly I just wanted to share one of my many negative experiences with the police over the years, as someone definitely considered 'vulnerable' and in a very distressing situation.

You can argue the law of you like but I don't think anyone can argue that trying to force a suicidal, hysterical, deeply distressed teenager held under the mental health act to give fingerprints and insinuating she's a criminal is really how anyone should be handling that kind of situation. I was meant to be taken to a "place of safety" not a place of continued truama and abuse of position and power.