What is Banditry?

Legal Definition
Banditry is the life and practice of bandits. The New English Dictionary on Historical Principles (NED) defined "bandit" in 1885 as "one who is proscribed or outlawed; hence, a lawless desperate marauder, a brigand: usually applied to members of the organized gangs which infest the mountainous districts of Italy, Sicily, Spain, Greece, Iran, and Turkey". In modern usage the word may become a synonym for "thief", hence the term "one-armed bandit" for gambling machines that can leave the gambler with no money.
-- Wikipedia