To be fair, it should hardly be news, that most of the people in those 'solidarity' groups are martyrdom seeking fanatics.
I also notice, both of thouse pictures feature diffrent buldozers. If on the day in question, the buldozer was sigificantly armoured, then its going to have the visibility of a ww2 tank, at best.
So if you have a fanatic darting around deliberately getting in your way.
It's still probably manslaughter, but then again, armed forces rarely convict their own troops where there is reasonable doubt. The Israeli's are no exception.