Selections From The March 2016 Harper's Index

Harper’s Index:

Number of refugees arrested in the United States on terrorism-related charges since 2001 : 10

Number of natural-born U.S. citizens : 320

Chances an American charged with Islamic State–related terrorism in the past two years was a convert to Islam : 2 in 5

Percentage of Islamic State recruitment videos released since January 2014 that target an English-speaking audience : 4

Portion of Americans who worry that a family member will be a victim of terrorism : 1/2

Number of people killed by political or religious extremists on U.S. soil since September 11, 2001 : 93

Percentage of these deaths attributable to far-right-wing political extremism : 52

Percentage of U.S. Muslim doctors who say their religion has caused patients to refuse their care : 9

I think that if the second item were written as Number of natural-born U.S. citizens arrested in the United States on terrorism-related charges since 2001 it would be much clearer.

Here's more:

Percentage of religiously unaffiliated Americans who believe in reincarnation : 25

Who believe that they have personally been in contact with the dead : 31

Percentage of department heads at top-fifty U.S. medical schools who are women : 13

Who are men with mustaches : 19

Number of U.S. universities that have been granted religious exemptions from federal rules on gender-identity discrimination : 33

Date on which the World Taekwondo Federation changed its name to avoid confusion over the abbreviation WTF : 12/7/15