WATCH: Revisit The Early Days Of Australia’s LGBTI Movement In New Telemovie

As the historic 40th anniversary of Sydney Gay and Lesbian Mardi Gras approaches, the ABC has unveiled the first trailer for their upcoming LGBTI rights telemovie Riot.

The movie will follow a group of activists who were part of Sydney’s first gay rights organisation CAMP (Campaign Against Moral Persecution) NSW and the landmark protest on June 24, 1978 that would become what is now known as Sydney Mardi Gras.

Riot‘s cast includes Damon Herriman as activist Lance Gowland, Xavier Samuel as Jim Walker, Kate Box as Margaret McMann and Jessica de Gouw as Robyn Plaister.

“With the system against them and ever-present adversity, including police brutality, legislative persecution, social shunning, job dismissal and general violence, Gowland and his fellow activists decide to come out fighting in their celebration of diversity,” the ABC said in a statement.

“By 1978, when the push to decriminalize homosexuality has seemingly stalled, they decide on a new tactic of a celebratory Mardi Gras in hopes of garnering wider public support.

“Securing a permit for a legal protest, on the evening of June 24, in recognition of Gay Solidarity Day, a small but passionate group collect behind a truck driven by Lance, to stage a street party and joyfully declare their pride.

“The night will be marked by great violence, but the ramifications will pave the way for equality, and the establishment of a world-renowned parade that continues to celebrate the spirit of these brave, pioneering men and women.”

Riot will air on the ABC on Sunday, February 25. Watch the trailer below: