Extremists ain't "Islamic".  Qur'an admonishes us to avoid extremes and seek "the middle way."  The "Judeo-Christian"/"secular" west has orders of magnitude more blood on its hands than the worst of those calling themselves "Muslims".  And I say this as someone who has been the enemy of the Da'esh, the Salafia, the Wahhabis and their ilk since before you ever heard of them.