I know for a Fact Most other countries are now agreeing that this was a group of thugs. The images the video and the people on board all confirm that these people were thugs. Ths was a propaganda move. Even the terrorists themselves have said they wanted to be martyrs. Also they did shoot weapons but they could only sneak a small amount on board.
ISIS claims responsibility for bombing in Baghdad suburb; death toll hits 21 (Reuters)
from the article: State Comptroller to probe Israel's raid on Gaza flotilla