england needs to bring back the death penalty, bring the guns, bring the tasers, bring the electric chairs...invent a new self defence technological weapon is for all i care !!!
if someone tries to threaten your life or is threatening someone elses life, then i think it is perfectably reasonable to kill them right there as an act of self defence....
how can someone walk into a bus, stab someone and run off?....its ridiculous...something needs to be done..