My friends who were captured by the police told shocking stories to me. Policemen:
* Plunt drugs on innocent people;
* Charge people with unsolved crime (to enchance crime solving rate);
* Violently beat people in a way to not leave marks on the body (and they will not allow relatives to visit victim untill he stops peeing with blood);
* Take away personal belongings.
And the very distressing part is that the law is always at their side. It is nearly impossible to establish policeman's guilt. Listed cases usually end with bribe given to police in order to release victim, and months of fruitless attempts of the family to «right a wrong».
Interesting fact is that Moscow policemen are angels compared, for example, with Taganrog policemen. So, do not listen to Moscow citizens—they do not have the full picture of what is going on in Russia. The muscovites can not imagine that one of the profitable job in a town can be steel melting 10 hours a day for 15000 rubles salary ($500/month, such workers usually die when they are under 60). One typical advertisement I have seen in Taganrog: «The cleaner is needed to kindergarten. The salary is 2000 rubles per month». So, policemen have the same low salary as others, and they doing their best to earn additional means.