I went to Wikipedia where I saw the symbols of the Kach/Kahane Chai (כהנא חי) movement and the Jewish Defense League. Can you spot the differences?
Note: Hebrew characters displayed above were inserted by copying and pasting.
Jewish Defense League
Kahane Chai (KACH) is listed as a terrorist group by the government of Canada.
Red Tory makes in interesting comment about the JDL:
[I]t’s interesting to note that in its report, Terrorism 2000/2001, the FBI referred to the Jewish Defense League as a “violent extremist Jewish organization” and stated that the FBI was responsible for thwarting at least one of its terrorist acts.