I'm not stopping you...
By all means. Move to the UK, and live there. Do not come to the US. I'm not (ahem) putting a gun to anyone's head making them live under the laws here. I'm not asking you to change your laws, nor am I ridiculing them. If you think it sucks in the US don't live here. I like the gun laws here, and if you just held up the liquor store, and you get shot running away, so be it.
If you get stopped by the police for any reason, be respectful, and cooperative. If you happen to have run into a cop having a bad day, it will do wonders to diffuse the situation. If you have done something wrong 'man up', then 'shut up', and call a lawyer, before you say *anything*, other than, 'I think I should speak to an attorney before i talk with you.'
Further, as bad as some of the incidences are, upon investigation, there is quite often a bit more to it than 'Jonny was innocently running down the street with a hoodie on, and droopy drawers.' If there are bad actors get rid of them.