I don't know if there is enough information to say that the cops did nothing wrong. An anonymous call shouldn't lead to an innocent man getting killed and cops

I don't know if there is enough information to say that the cops did nothing wrong. An anonymous call shouldn't lead to an innocent man getting killed and cops need to investigate these situations more carefully. I agree the prankster needs to go to jail but if the cop really did kill an unarmed innocent man there should be some type of punishment.