Hot Docs, North America’s leading documentary festival, will open with the world premiere of “Parade: Queer Acts of Love & Resistance,” directed by Canadian filmmaker Noam Gonick. The documentary explores the pivotal moments that sparked Canada’s 2Slgbtq+ movement.

The festival’s 32nd edition, which runs from April 24 to May 4 in Toronto, has revealed a lineup that includes 35 world premieres, 14 international premieres, and 26 North American premieres. The lineup has 113 films from 47 countries, drawn from 2,662 submissions.

The International Spectrum Competition, all world premieres, includes “Heritage,” a family snapshot in which two siblings alternate shifts caring for their elderly parents; “I Dreamed His Name,” which follows the filmmaker and her sister on a journey of discovery across Colombia’s painful history, 30 years after their Afro-Colombian father’s forced disappearance; “I, Poppy,” which follows a son’s fight against corrupt officials while his mother tends their poppy farm in India; “King Matt the First,...