Chicago Cops - 10,000 plus complaints

I just turned on to CNN and found a story about all the bad things that Chicago cops have done. How can cops become so bad. There are over 600 cops that have 10 plus complaints against them. How can you have so many people with complaints and nothing happens to them. I do not understand how nothing is happening to these cops. Two of the cops that have so many complaints against them have been promoted. These are the people that are supposed to protect and serve, but are doing the opposite. It always seems that nothing is ever done until a news agency brings it up. I hope now that CNN has brought it up that these officers will be reprimanded and the right action is took.