Terrorist attacks in the United States "by antigovernment, racist and other nonjihadist extremists have killed nearly twice as many people as those by Islamic jihadists" since Sept. 11, 2001, according to a study cited in the New York Times.

  • 48 have been killed by extremists who are not Muslim, including the recent mass killing in Charleston, S.C.
  • 26 have been killed by self-proclaimed jihadists.

"The assaults have taken the lives of police officers, members of racial or religious minorities and random civilians," the Times notes.
Here's how the assaults resulting in those deaths since Sept. 11, 2009, break down:

  • 19 of the assaults have been carried out by non-Muslim extremists
  • 7 of the assaults have been carried out by Islamic militants

The Times addresses some of the subjectivity in the study, which does not count attacks not ideologically motivated, including the Colorado movie theater and Connecticut elementary school shootings of 2012.