After the Dallas shooter had already killed several police, and was holding in a position where approaching him would be extremely risky, I don't see why they s

After the Dallas shooter had already killed several police, and was holding in a position where approaching him would be extremely risky, I don't see why they should bother considering his life. This has nothing to do with routine police use of force, where you could argue that some police should sometimes take some more risks in balance with the public good.