Amin Nawabi is an Afghan refugee living in Denmark. He has a successful career and a boyfriend. Amin is not his real name, though. It’s a pseudonym and for the purpose of sharing his harrowing story, chronicled in the animated documentary “Flee,” it’s a necessity. Even today, if his name was revealed publicly there could be serious repercussions for both himself and his family. That sets the stage for how serious the stakes are in Jonas Poher Rasmussen’s powerful and personal new film. A picture that has finally been unveiled for the world at the 2021 Sundance Film Festival after it was initially chosen for the canceled 2020 Cannes Film Festival last May.