LIVE POLL: Laura Poitras, Oscar-Winning Documentarian

Which of the following documentaries*, as directed or co-directed by Oscar-winning documentarian Laura Poitras, is the most powerful?

~~

LIST:  https://www.imdb.com/list/ls4152455705/

LIST (copy):  https://www.imdb.com/list/ls4152455705/copy

POLL: https://www.imdb.com/poll/9k6o4Pc5XgUS9AseIfEXPQ/

~~

*Feature-length documentaries only; no short films.