Did you even watch that video before linking it. It was just the typical "Israel says this, Hamas says this" shallow reporting with nothing but superficial analysis. It even concludes by saying that it is still unknown and that expert analysis is required - meaning it hadn't been done yet or they were unaware of it.

I support the Palestinian cause - insomuch as that cause is freeing the Palestinian people from Israeli oppression. I do not support the Hamas cause, of "Destroying Israel and establishing an Islamic theocracy in Palestine". That is their stated goal.

It's not "both sides" to accept the reality of the situation. It's two groups that want to annihilate each-other. The difference is that Israel has all the power and, instead they chose to provoke this conflict by continuing to steal land and treat Palestinians like prison inmates. Oppressive regimes always lead to conflict.