Why did Israel attack the 'flotilla of fools'?

As noted earlier today, the IDF attacked the 'flotilla of fools' - the group of ships bringing 'aid' to Gaza in the wee hours of Monday morning. The IDF has confirmed that 7 soldiers were injured: 2 severely, 2 moderately and 3 lightly. All of the injured people on the boat - including the 'activists' - have been evacuated to hospitals in Israel.Reports indicate that anywhere from 2 to 14