LA Police are a literal gang. There are places with police that are corrupt in more obvious ways such as places in Africa but to say US cops are some of the least corrupt is ridiculous.
As I said to another commenter, "some of the least corrupt" != "not corrupt". I'm sure some countries are better, but there are not that many.
Many people have WAY worse concerns. There's a sheltered view here, but it's not the one you're thinking of.