As a live action example, look at Africa. They can't raise crops, dig wells, run electrical utilities, or maintain any other civil technical facilities. They have no ability for health care, (Big on witch doctor magic, tho, and assigning blame for infections on "spirits"...), and as far as combat skills, "Insh'Allah!" and holding down the trigger until it clicks dry is not a particularly effective tactical targeting system.
If they want to provoke a race war, I've got the winner, point spread and odds...