In searching for something else, I found the video below.
It is basically awesome in what it shows, which is two very stupid people who insisted on messing with the wrong person and who got their asses kicked in a most efficient and systematic manner.
It is rich in martial arts goodness and delicious schadenfreude.
Posted just for your enjoyment.
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About 30 seconds in you see the store owner come out of the back for right to left in the light-colored hoodie.
At about 35 seconds you see the 2 bad guys (appropriately dressed in black) closing him into the back corner.
At about 42 seconds he explodes on the guy closest to him and knocks him half-unconscious. He lays into and wails on the second gut
At 51 seconds watch store owner wrap his arms around the bad guy's left arm. He trips and throws the guy through the air and onto the floor. Like a boss.
Both guys get knees too. Never forget you get more with a kind word and a knee than you get with a kind word.
At about 1:00, 20 seconds into the encounter, he is on top of both of them, just wailing on them, smacking them in the head and face, choking both of them for a couple seconds. That is a pretty good move.
At 1:12 some old guy looks at the store owner on top of the 2 robbers and apparently decides the situation is under control and there's nothing more to see here and exits.
At about 1:26 Bad Guy #2 is getting uppity and trying to escape out the back, store own adjusts and start wrenching Bad Guy #1's hair. Or something: it looks really painful.
At 1:39 the security camera skips and the party is over, the constabulary has arrived.
Cops showed up to take out the trash and do paperwork.
Store Man, from start to finish, took less than 1 minute to neutralize 2 would-be robbers, using punching, knees, throws, choke-holds, and ground-fighting/Brazilian-style jiujitsu.