It spans a decade, culminating in a 'Yes' vote for same-sex marriage

A documentary on Ireland's marriage equality referendum is being shown on Netflix.

'The 34th' tells the story of people who developed the campaign into an effective grassroots force.

It covers topics from the Zappone-Gilligan legal case, to a 'Yes' vote in May 2015.

The name relates to the 34th amendment to the Constitution, which allowed same-sex marriage.

Children's Minister Katherine Zappone, who married her late wife Ann Louise Gilligan in Canada, explains what prompted their legal case.

So we wrote the Registrar General to say 'we'd just like to register our marriage' and we wrote to the Revenue Commissioner just to change our tax status.

"And that's when we received, especially from the Revenue Commissioner, back that incredible letter that said 'Dear Ladies, we can't give you a change of tax status because the definition of marriage here in Ireland was between a man and a woman'.

"And we said: That's the letter that we need to go to court".