Kathleen: "Will ye be marchin' with us on Sundee, Rosemary?"
Rosemary: "Aye. We'll show the bastards."
Kathleen: "How's yer Martin?"
Kathleen: "He'll be out soon, no doubt."
Rosemary: "Fifteen years!"
Kathleen: "Aye. Well. He's a hard man, but he's a principled man."
At the end of the episode, the family can be seen marching together in a gay pride parade. It wasn't until a repeat viewing, when I noticed Rosemary amongst them, that I realized the above conversation was really about gay pride.