Someone once asked...
Someone answered with kindness...
Karma does not exist, not in this world. Evil people have always been in the rule because those who believe in the greater good will always tolerate the evil. To overcome evil, you shall let the evil inside yourself, contain it and use it for the good. If karma existed, certain people would have already been dead, but they are alive and thriving in the lives they took and the lives they ruined. To beat the evil, you yourself have to be at leat a speck evil.