There was no secret made of the fact that the flotilla was intended as a strong protest by people of many different countries against what most of the world consider to be the totally inhuman blockade against Gaza.
There was enough written in the news about it before it sailed. Both by those protesting and by the Israelis who had said there was no way it was getting through (they didn't say they'd kill anyone who tried).
Some are posting as if it came as a complete surprise to them that there was political motivation, only after the flotilla was attacked.
I wonder if any of those protested about the flotilla BEFORE it left? There was plenty of time - it was late leaving.