A Houston police officer shot and killed a one-armed, one-legged man in a wheelchair Saturday inside a group home after police say the double amputee threatened the officer and aggressively waved a metal object that turned out to be a pen.

12 years for a wrongfull conviction (not the worst there has been).

In the Dallas suburb of Garland, a man was killed by police who rammed his vehicle (after initially denying it) and fired 41 shots at the victim. Details are still emerging and stories changing as more details become known. It is reported that a witness recorded some of the incident via cellphone but was forced to destroy the evidence by the police.
http://www.huffingtonpost.com/2012/09/13/michael-vincent-allen-shot-at-4...

Family Says Redwood Avenue Victim Was Shot in the Head and Chest by City Police; Officers Placed On Leave

The Anaheim police officers who killed two men in back-to-back shootings in July have returned to their jobs and are no longer on paid administrative leave, a police spokesman confirmed Thursday. Anaheim Police Sgt. Bob Dunn said he did not know exactly when the two officers returned but said it had been "a couple of weeks." He declined to provide their names but described both as veteran police officers.