The problem with communists

Every time a communist party takes over there is a lot of violence and injustice. Some may argue it is just paying back what poor people suffered for centuries. But there is no point if only people change but the attitudes remain same. All hate based political parties tend to be violent. The hatred for the rich which is so necessary for survival for communists parties today is exactly their problem. They would be better served if they replace their intense hate for the rich with intense love for the poor.