Do you think there's a balance of Laws, Crime Prevention and Policing where we can reach 0% crime?
Firstly, (And I am being quite serious) it is necessary to define what a Crime actually is. Why they should be prevented in the first place and what the role of Policing should actually be.
This is not quite as simple as it might seem!
America is probably a bit too strict
There is a reason why the US government has a strong authoritarian streak.
They had a
really nasty civil war not that long ago (And no, it wasn't about Slavery!)
Yes, 1865 might seem like ancient history. But as of last year, there was still one last remaining Civil war pensioner

, so in the US cultural mind it
really is only yesterday!
The US central government is pretty paranoid about something like this happening again, and it is not at all impossible.
Many US citizens are also pretty paranoid about it too (Hence the very large numbers of people who also take their second amendment rights
very seriously indeed)
The USA is actually unique as a nation state.
US society is an interesting thing to debate. But it should absolutely not be used as an example when discussing issues relating to other nations.
US cultural history is sufficiently unique that it really should not be used in comparison with any other nation state when discussing social issues.
It really shouldn't.