Really? You're going to try to justify this on the basis of the "War on Terror"?
Muslim American terrorist plots have killed since 9/11 — since the 3,000 killed on 9/11 — have killed 33 individuals in the United States since that time. Over that same period of time, there have been more than 150,000 murders in the United States, or 14 or 15,000 murders every year. Muslim American terrorism, then, has been a very small, very low percentage of the overall violence in the United States.
Terrorism Expert: Since 9/11, Only 33 Deaths From Muslim Terrorism Vs. 150,000 Deaths From Murders | ThinkProgress
As many people were killed at Virginia in a single day as Islamic terrorism has managed to kill since 9/11.