It’s not about Palestine, and made by a Western director, but it might still be what you’re looking for:
The Act of Killing, (CW reenacted violence) a documentary in which the perpetrators of the 1965-7 anticommunist genocide in Indonesia were asked to make a propaganda movie demonstrating how they did it, not realizing the documentary would instead show their depravity and evil.
This documentary was devastating for me, both personally and on a human level, not to mention what it means for the safety of leftists. It’s not entertaining by any means though, it’s a heavy one.