BREAKING! KNIFE ATTACK IN LONDON!

London Police are reporting a knife attack in Central London.  One dead and six injured.  POLICE "TASED(?)" THE ATTACKER!  That is pure insanity.  Either they have incredibly brave police or they're incredibly stupid and don't understand the realities of a knife attack.  21 feet.  Expect to be cut so give up your non-firing arm to defend.  Shoot to stop because a skilled knife wielder can strike you several times in seconds if they get within range.  Oh and expect to be cut.