I guess a Tazer could be used...but what kind of message does that send to potential terrorists? Go ahead, try to blow us up...we'll stun you or put you to sleep? Or if you're a little more cynical, what kind of message does it send to your own people? The decision to shoot to kill, may be more for the masses than the perps. The perps'll kill themselves anyway with suicide bombs. Thing is, the people want to feel safe...if that means popping a cap in someone's ass that runs from the cops, so be it.
The message that it would send to terrorists and others is that we value human life, even though they may not. Had the person actually been a terrorist, he could have been charged and then made to pay for his crimes. Had he actually been a terrorist, he could have been interrogated, and possibly some important information could have been gathered that would lead to other terrorist arrests. Had he actually been a terrorist, would not the other terrorists be fearful that he would give up their secrets, and possibly make them re-think their next move, rather than realize that he is dead, and can't divulge any information, thereby realizing that they are safe to carry on their next plan? Right now, the unfortunate people in Great Britain have to walk on eggshells for fear that they will be attacked by terrorists. Should they also have to walk on eggshells for fear that they may get killed by people that are supposed to be safeguarding them if they happen to be dressed different than others around them?. There are many days when it is 90 degrees plus outside, yet I will wear a long sleeve shirt, and have even been known to wear a leather duster during mid summer when there is an event going on and I want to look really spiffy wearing my duds. Should that automatically single me out as someone who is up to no good? Also, if I were to have someone or multiple persons wave a gun around me, or point it at me by men who were not wearing uniforms, my butt would be outta there. I have been robbed, with a gun to my head, and been pistol whipped by the robbers, and have a scar on the top of my head to show for it. Any gun would make me run, unless I saw It was a person in uniform with a badge. How nice of the cops to put their police hats on after the guy started running, and had his back to them. Also, why 5 bullets? Would not the first one to the head generally do the trick, rather than kill the person over and over and over and over again?