In order to provoke a revolution, something has to affect a great majority of the people in a way that is very important. Of the conditions you list, the only one that could possibly lead to a revolution would be income inequality, and even that is very unlikely at this point.
The current issue about contraceptives applies to a very small portion of the populace and therefore cannot cause a revolution. The same is true of levels of education. America is more educated than ever so anger over education is unlikely to cause a revolution.
What could cause a revolution is if too many people start to feel that they are working hard and not getting ahead while a few people at the top get extremely wealthy. Just by itself, wealth at the top will not cause a rebellion. Americans do not really care if there are really rich people so long as they themselves are relatively well-off. If, however, enough Americans feel the system no longer rewards them for hard work, the presence of extreme wealth at the top could be cause for a revolution because so many people would be affected by it.