James,
A local surveillance camera [in Albuquerque, New Mexico] caught this stabbing incident. There are lots of lessons here, but I'd point out three: 1--the attack was quick, with no warning and no known reason, and 2--the victim fought back as best as he could, probably saving his life as the attacker was trying to stab him again and 3--"smoke shops" should be avoided. - Scott B.