A look at monarch butterflies who have brought hope to the darkest times of people's lives. In Mexico, when they arrive for Day of the Dead, they are thought to be souls of the departed.
Bowling for Columbine
Fahrenheit 9/11
Free Solo
Inside Job
20 Days in Mariupol
Searching for Sugar Man
Blackfish
Bo Burnham: Inside
Sicko
The Social Dilemma