Who cares if they were liberty activists or not? In such a large group of peace minded people, likely a handful of them are liberty minded people, but there's no way to know right now. The real question is, is this a liberty issue? I think it is. It's civil disobedience drawing the legitimacy of state authority into question. Maybe it's not the state you particularly want people to be resisting, but they are absolutely resisting big government.
I don't think so. I think this is a bunch of either A) Morons or B) Religious fanatics who have been brainwashed by fascist propaganda to resupply Hamas. The fact that they attacked boarding soldiers with kitchen knives instead of simply letting Israel pass the goods across the border shows that they were not interested in any humanitarian mission to resupply average people.
They clearly were either trying to
1) add to the propaganda machine,
2) resupply Hamas operatives (terrorist assholes who deserve to die),
or
3) were simply too stupid to realize that they were sailing into a war zone.
Which do you think it was?
At what point does directing civilian vessels away from a war zone become a legitimate military engagement? About the time the "civilians" start attacking the soldiers enforcing the blockade. Start attacking people and you're no longer a civilian.