Thanks for the cultural insight. I always wondered if the so-called "black and tan" beer cocktail was something that would be considered offensive to Irish people, although it's widely served in Irish-themed pubs here in the US.
https://en.wikipedia.org/wiki/Black_and_Tans
"... In the summer of 1920, the Black and Tans burned and sacked many small towns and villages in Ireland, beginning with Tuam in County Galway in July 1920 and also including Trim, Balbriggan, Knockcroghery, Thurles and Templemore amongst many others. In November 1920, the Tans "besieged" Tralee in revenge for the IRA abduction and killing of two local RIC men. They closed all the businesses in the town, let no food in for a week and shot dead three local civilians. ..."