Street gang members and congress gang members.

Well, there are still people who are mourning family members lost in Iraq.

Anyway, a street sweep a la Giuliani is long overdue in Chicago.

I say yes, if they are holding influence over a community to the extent where the vast majority live in fear from them.

Yes but it has to be done to all of them, not just the ones you deem worthy

If that what it takes to end street gangs and that mentality then yes.

Since 1800s?

Since antiquity lol... It was a huge problem in Ancient Rome.

Really? Where can I read on that?

what kind of terrorist? ISIS and contra like (weapons for them as long as they kill people the us dont like) or PKK and IRA like(no weapons and they are bad bad terrorist because they kill people the us likes even if they are war criminals like mountbatten)?
and who should the US deal with those terrorist? breaking international and us law with drone strikes and underground torture prisons?

Cicero's Pro Milone gives a nice account of gang related violence in Ancient Rome. It's a source written in defense of Milo, who was accused of killing Clodius Pulcher. Cicero was too much of a coward to read it out loud at the trial though, and Milo was convicted (he would've probably been cleared if Cicero read it out loud). It speaks to itself that this is a one sided source of the events that happened in Rome. It's biased in other words. Still very much worth a read.

Collegia were also often criminal organisations that would be considered gangs these days.