Every religion has its radical or extremist groups

For instance:

"Israeli Prime Minister Benjamin Netanyahu brokered a deal this week with the right-wing extremist party Jewish Power, which has roots in a violent, racist movement that Israel and the U.S. deemed a terrorist organization.

Jewish Power, or Otzma Yehudit, is led by followers of Brooklyn-born Meir Kahane, an openly racist and ultranationalist rabbi who led extremist organizations in the United States and Israel."

Huffington Post