Reader MMW notes that the Dallas Police Chief is tightening the department's TASER rules. They appear to be taking a step toward the original intent of TASER guns - that they are an alternative to lethal force and should not be used as cattle-prods.

Four people have died in Tarrant County after being shocked by police with what is described as a nonlethal device...

Chief Kunkle described the Taser as a "very valuable tool" that may have kept police from having to use deadly force in 20 incidents, but he wants to make sure Tasers will be used in situations in which officers are facing an immediate threat.

Under Dallas' new policy, officers can use Tasers only to subdue someone who tries to assault them or someone else by grabbing, kicking, punching, wrestling or throwing something. Previously, police could shock someone who was resisting arrest but was not physically threatening an officer.

Police officers already have a tough job, and will hopefully be provided with adequate training in order to make the distinction.