Canada: Man decapitated on bus

[Schneed10]

See, here's the thing. If you see a couple punk teenagers on the street wailing on a homeless guy with their fists, then it's relatively easy to intervene. You see no weapons, you get the fit of rage from seeing someone doing that, and you take one of them down hard.

But a dude with a gigantic knife? If you're unarmed? Hard to see how you're coming out a winner, unless you're combat-trained. You can get lots of punches in and he's still standing, but if he gets one knife on you then you go down in a heap and you're helpless from there on in.