I agree, but you would have to be very careful about how you word any new laws pertaining to gangs. Does the word "gang" pertain to motorcycle clubs? What about lodges? What about political groups, such as the 99%ers, or the Tea Party?
Like I said, I agree with you that street gangs should be dealt with differently, but you must be careful when defining the word "gang", as someone could use this new law to end any group they don't agree with. It could be a slippery slope.