Call things by their relational name. Terrorism today, for example, is primarily perpetrated by Muslims (but of course not all Muslims are terrorists). Another example: The Spanish Inquisition was a manifestation of Christian (in particular, Catholic) totalitarianism.
From the Aspen Ideas Festival (from Aug. ’07): Ayaan Hirsi Ali
Related: Former radical Islamist reveals the mindset. Here.
Related: Is Islam compatible with Liberal Democracy (from July ’07)? Here (video).