When is Enough Enough?

All this talk of civil liberties being violated by government and authoritarian powers got me thinking, "Who else in power is abbusing it." Then, I remembered an individual who was mentioned in class, John Burge, a Chicago Police detective in the 70s who was accused and abusing and torturing suspects. This is a scary thought, I know... cops are supposed to 'serve and protect' right, and nearly all of the time that is the case, but sometimes people abuse power, and do terrible things that they are for the common good. One account tells of Burge tracking down a suspect who shot 2 officers restlessly for 5 days, and  finally found himself attacking his door with lockpicks, which are rarely used by policemen. Then, he captured and tortured the suspect. This is a chilling story, and makes me think, "When will people in power stop being corrupt and truly look out for the common good?" When is enough enough?