From the New York Times:

Islamic extremists, non-Islamic extremists, whatever. What gets my attention is the rapid growth since ca. 2008 in the overall number of deaths.

ADDENDUM 12/15/2015:   FYI, you’re more likely to be fatally crushed by furniture than killed by a terrorist.  Since 2001 and counting 9/11, there have been roughly 100x more firearms-related deaths in the US than there have been terrorism-related deaths.   If you start counting after 9/11 then there have been about 1000x more firearms-related deaths than terrorism-related deaths.