Is there an organized group of 'Rangers' who can act to balance against the more excessive acts of these aggressive groups? If so, how does one make contact with them? If not, why not? Are the Russian groups so good at developing their hearthlings that they are lightyears ahead of other players?
An imbalance in game mechanics caters the more agressive players and at least all the really big peaceful factions have quit the game or some of their members switched sides.
If you want a police force in the game right now I am afraid you will have to build it yourself. It is not impossible to catch up, but difficult and you need a good organization with good people to pull it off. Note that you will also be fighting an uphill battle against the flawed game mechanics as well as against the players who have spent day and night practicing the combat system.