Make it unconstitutional to kill unarmed citizens. There are other non-lethal methods to resolve confrontations.

I'm asking for a revision of our constitution. It does not protect the average American citizen from the use of excessive, lethal, or deadly force, by authorized police officials, to resolve citizen/police confrontation. Police officers have an array of non-legal weapons but choose to murder unarmed citizens as they deem necessary. This murder with no trial or conviction is unconstitutional and should be out-lawed.