The government's portrayal of Muslims so they can convince their people that they need constant protection. This is needed to justify making a ton of weapons and starting wars which make up a huge portion of our country's GDP and make some very rich and powerful people a more rich and powerful. This is also needed to justify invasion of privacy beyond that of any other group in the history of the world.
Also popularly used as a synonym for Muslim, or as an analogy to anyone a political party wants to rag on.
Derrick Jensen: History's heretic is yesterday's communist is today's heretic
Average American: The terrorists need to get deported before they blow up my house!