Wrong, many of them at least were peace activists. That doesn't matter though. Defending your ship from an attacking force trying to lower armed forces from a helicopter in international waters in the night when you've done nothing illegal is completely understandable.
I can't believe many here act like that is acceptable protocol. Israelis did something incredibly stupid.
One of the basic tenets of non-violent resistance is to call off a protest if the protesters turn on the oppressors. Gandhi called off innumerable such protests against the British when it happened. The idea is to highlight the justness of your cause against the oppression of a superior force.
In this case, what we have is a mob which came prepared for a fight. To call them peace activists is laughable.
Once again, you can't use the letter of the law of the seas to kill it's spirit. These guys were using it to tweak Israel's nose, with the added danger of potential smuggling of arms into Gaza. If anything, it is these faux-peaceniks who have jeopardized maritime travel and trade with their antics, much like the 9/11, shoe-bomber and underwear bomber criminals who now have made air travel so difficult for the rest of us.