The hunger strike things is stupid and overplayed. The same thing happened when i was in college. If someone wants to starve themselves.....please, feel free. People shouldn't cave in to such actions. Ideally, it's no different (on conceptual tactic) than a person holding a gun to their head threatening to harm themselves, standing on a bridge threatening to jump, or any of the other "cry for help/attention" scenarios, except that starving takes longer and most people will never see it through and never truly are at risk of harm.
If guys want to not play football for a school because of the President, that is entirely their choice and a sign of protest that makes sense. However, they need to understand that doing so can have consequences (like most things in the real world) and could cost them their scholarship. But at least that form of protest is respectable with a strong statement.