Yes there is proof.The Turkish authorities inspected the ship completely before it left its port and ensured it to be free of any weaponry. Even the weapons that the Israeli pirates supposedly confiscated included only hammers, kitchen knifes and spanners.
http://en.wikipedia.org/wiki/File:Weapons_on_Marmaris.jpg

Read these accounts of people on board also.
http://www.gulf-times.com/site/topics/article.asp?cu_no=2&item_no=365707...

The language of your comments (the humanitarian workers are savages?) and your ignorance of the facts (they were perfectly on legal grounds in international waters whether you like it or not) point to an inhuman attitude in you to justify starvation of a million and a half civilians in Gaza for not doing what Israel wants it to do. But if Israel looks back at its own history and how the Exodus raid of 1947 paved way for its own creation, it can see for itself in the near future the doom it has brought about for itself.