IMO: it's not an issue with "radical" Islam. It's a problem with Islam. Its core texts are the Koran, the Hadith and the Sirah, life of Muhammad. In all of these the enemy is all non-Muslims. The aim of all Muslims -- according to these foundational texts -- is to fight against all non-Muslims. To carry out Jihad against them.
To me that means the problem is ISLAM. Nor radical Islam. But Islam.
By all polls large chunks of the Islamic community believe all the stuff in the core texts. They believe in the supremacy of Islam over all other religions; they are homophobic; they are misogynist; they are racist. And they do not believe in free speech. All of that in their core texts. The Trinity of Islam.
