LA cops are (hopefully) able to understand as well as Russian motorists. They just need someone to do some 'splainin' to them.
Example: In a case of your word against the citizen, without dashcam or lapelcam evidence, the citizen's word is given extra weight.
Let the union bear the responsibility to check that all 'cams are in working order. Earn their dues money for once.
That's not the way it is. Law enforcement and judiciary are part of the same club. Judges will cover for bad cops, even if the cops word is implausible, it is accepted as truthful. Citizen's word is presumed to be untruthful, although this has to be an unstated presumption, it is what exists in fact. Cameras can change the presumption, which is why the law enforcement/judiciary business resists them.
“Scads of Russian motorist use their own money to buy dashcams to protect themselves in case of an accident.”
Not to mention the fact that it also provides hours of hilarious videos. Go to YouTube and search on “driving in Russia,” for many examples.