Police are only allowed to use force that is reasonable to accomplish their law enforcement purpose. Too often, police use force that is excessive or as a means of punishment. This can be anything from handcuffing an individual too tightly, to pointing weapons at persons who pose no threat, or using illegal restraint techniques--just to name a few.
When our criminal-legal system convicts innocent people, it erodes the public's faith in our entire system of government. Convictions can be classified as wrongful for two reasons: (1) the person convicted is factually innocent of the offense charged; or (2) there were procedural errors that violated that defendant's rights.