Here's a tip: don't engage any American woman in a debate about Planned Parenting without having your defences ready. No matter which side of the fence you sit on (pro-choice or pro-life), it's a slippery slope into a debate that has been raging for well over a century. But despite the controversy of the subject, a new 6.48 minute documentary 100 Years aism to shed light on the history of the women's health care provider - and why it still matters. Allowing US women access to safe abortions, cancer screening, birth control and STI testing Planned Parenting plays a fascinating part in the history women's rights movement and this doco is a must-see.

Directed by Lena Dunham and Kirsten Lepore, 100 Years enlists the help of some high-profile narrators whose voices you might recognise: think Meryl Streep, Hari Nef, Mindy Kaling, Jennifer Lawrence, Amy Schumer, America Ferrera and more. Shot in cartoon style, the video may reflect American socio-political issues but given the fact Planned Parenting faces serious Trump administration funding cuts, how it survives could be a lesson to our government, too.

"We've been working on the film for over a year in an attempt to shed light on Planned Parenthood's remarkable history and ongoing battle to keep serving the people who show up to their health centres every day of the year," Dunham wrote in Lenny Letter. "The spirit behind this video will hopefully take us into the Women's March on Washington this weekend, where we will be showing our new president that we're not going to allow a hundred years of progress to disappear overnight."

It's a powerful statement on the eve of Trump inauguration and the Women's March on Washington. Watch the film below.

Lena Dunham, J Law, Meryl Streep and more back a powerful new campaign