Canadian Activist: They "gunned down civilians from helicopters"

Here's another eyewitness:

Neish watched in horror as Israeli soldiers gunned down civilians from helicopters as the raid began, and he saw the bloody bodies of at least nine people killed on the Mavi Marmara. He flatly rejects allegations that people on the ship were armed or that they attacked the soldiers. A videotape produced by the IDF purports to show activists hitting the soldiers with sticks and stones, but its legitimacy is in question.

There seems to be somewhat of a running theme here.