Local Gangs? Lol, you know what kind of reasons they fight
for.
You see me, bei song
I stare at you, not happy.
Fight lor. Weapons = parangs, baseball bats.... 
At carpark....
WTF?
Fighting over see each other face
not happy? ROFL.
Then 999 come, run!!!!
In HK or TW, they fight for $$, lands, drugs. Police come? Just
shoot them down.
Or maybe police dont even dare to mess with them.