As a general rule anyone who smashes a store window is up to no good, and whether they're smashing the window to loot, get even with the owner or simply because they're drunk and/or high it all amounts to bad karma.
And karma has a way of instantly catching up with you, which the guy in this video found out the hard way after wantonly smashing a store window and threatening a guy who questioned him about his brazen vandalism.
-Via Boing Boing