Some of the biggest stars at this year’s Venice Film Festival won’t be the famous faces walking the red carpet, but the wildly high-profile subjects of documentaries that range from intoxicating to grippingly urgent. From Oscar winner Alex Gibney‘s 4-hour dissection of Elon Musk and Disney’s intimate Oasis reunion movie to NAZA, the politically charged documentary about “Israel’s calculated mass killing of Palestinian civilians in Gaza,” and the ICE documentary They’re Here from Laura Poitras (another Oscar winner) — many of this year’s must-see movies on the Lido are clearly nonfiction. And, arguably, the biggest star who may or may not…
