Meir Kahane was also a typical "Brooklyn Bruiser" ie he didn't take insults lying down. In this clip he single handedly takes on leftist pork-eating kibbutnikim in 1986 in Afula.
In 1993, three years after Rabbi Meir Kahane's assassination, his followers had a camp in NY to train young Jews in self-defence in JDL style, under Mike Guzofsky.