1910s is a bit vague.
@DeanVolecapeAKAelderberry I do apologise. That was vague of me. I didn't think anyone else would be interested in my family history. For anyone who is, my father was born in Killarney in 1918. His father was in London, having left his pregnant wife and three children to get a job in the docks. It was known as a "ticket" and was much prized. The jobs were controlled by family ties and Irish family members already living in London had got it for him. It was a very good reason for leaving Ireland where secure work was harder to find.
Sometime after my father's birth, I think it was 1919 but forgive me for being vague on the details because my dad is no longer available for consultation, my grandfather sent for his wife and children. So they didn't have direct experience of the Black and Tans but they had family still living in Ireland who did. That would be my great grandparents and great aunts and uncles and people like that. Not my grandparents as I said. That was what's known as a slip of the tongue.
That's why I said to @Fimat that British people or people living in Britain of Irish descent, whatever you like to call us, would know who the Black and Tans were. There are quite a lot of us dotted around, especially in English cities like London and Liverpool and thereabouts whose forebears never made it to America.
I also know who the All Blacks are even though I've never been to a rugby match or indeed, New Zealand. Because I'm not interested in rugby I couldn't tell you if Ireland was doing better than England. Are they? If so, that's nice for Irish rugby fans.
Though I am of Irish descent, I'm not Irish and neither is Joe Biden. Though on the Biden Scale of Irishness, I'm a bit more Irish than him. But it's not a competition. He can be proud of his Irish heritage and talk about it as much as he likes. I'm truly happy for him. It's just unfortunate when he makes mistakes. It's funny though. I agree, the cartoon wasn't.