Just in any country, the legislative assembly enacts the law and the judiciary interprets them but with a pending case before them. Russian legal system is fair. Even if it does not suit the ideology of the ruling party, a criminal will surely merit a conviction because judges in Russian courts cannot be bought. Besides with the cops as witness, who would dare obstruct justice. Even during the times of Stalin, criminal law is strictly enforced. Thus a pickpocket from Rumania expects to be in jail no matter how extremely Marxist he is. Rapists and murderers are hanged in the gallows too.