The majority of the world's Muslims acquiesce to laws discriminatory to non-Muslims and women. No non-Muslim may practice his faith in Saudi Arabia; Coptic Christians may not build or repair a church without state permission; and Malaysian Christians cannot even use the word "Allah" for God. Imagine if you're an atheist or agnostic? If you are a woman in any of these countries, good luck. And if you're gay? Hence, the majority of the world's Muslims are the problem. ISIS and Islamic terrorism may be an extreme variant of the religion, but it's the same religion. So long as the majority of the world's Muslims accept these oppressive practices, they are responsible from the consequences which flow from them.
And US actions over the last 80 years have done nothing but increase these problems.
It's support of the Saudi dictatorship. The Saudi mafia run nation.
It's removal of the democratic leader of Iran. The destruction of Iran's democracy.
The diplomatic cover for decades of Israeli crimes including kidnapping torture and murder from any consequences in the UN.
The support of Saddam Hussein in his terrorist attack of the Iranians.
The terrorist attack of the Iraqi people and the destruction of Iraqi society plunging the country into the hands of religious fanatics.
The list is far longer but this is far more than sufficient.