Perhaps gang members of an armed gang should be treated as members of an irregular military group.
They could be rounded up and placed into camps until a peace treaty is negotiated.
It is my understanding that the Germans rounded up during 1941-1945 by the Soviet Union were not released until 1955.
Hidden cameras could be placed to identify gang members.
“Perhaps gang members of an armed gang should be treated as members of an irregular military group.”
They need to “disappear” from the earth, permanently.