Our legal systems merely work differently when you look at the cogs moving, but the end result for the average citizen is very much similar.

Cops can't just go around aresting people based on accusations and questionable evidence, they have to have good reason to belive a crime has been committed, and be able to present that evidence. For a cop to be a dick and arrest you on dodgy grounds, he's going to have to lie on his paperwork. The risks heavily outweigh any reward, which is causing a few hours of inconvenience vs losing his job and maybe being prosecuted.

Our legal system is far from perfect, but I'll take it over most. The only thing I really take issue with is drug laws, I'm otherwise law abiding.