Their wages are that low because their job doesn't require skills worth paying more for.
http://singularityhub.com/2013/01/22...gers-per-hour/
America should be worried about educating its work force so that it doesn't need to fast food jobs, not complaining about how little they're paid. If they were worth more than the wage they are getting then they could strike or walk out, but the problem is that the job is so unskilled there's probably a vast number of people ready to take their jobs. Walmart has an acceptance rate of ~3% for its jobs.