Islamic Imperialism

How come no one is talking about Muslim Imperialism? Rage against American Imperialism is all the rage. But Islamic Imperialism is the much bigger threat. Islam professes a policy of imperialism. That is the distinction between the Islamic Daar Islam and Daar al Harb. (The Islamic domain and the domain yet to be conqured by Islam.) Under the guise of Political Correctness Islamic Imperialism is dismissed as "their religion". This is just the effect of being in the grip of an ideology, and clearly not one of thinking.