Arrest the top 5 leaders in the gang and detain them without trial for 20 years.
If they cannot control their young kiddie gang members, then they are not fit to be the gang's leaders.
For the kids who slash, cane 24 strokes, prison 50 years.
For the kids who murdered Darren Ng, all of them death sentence by hanging.
Don't send wrong message...like $50 fine only.