Sorry, I forgot the etymology of that one. I think I heard the term in a Netflix show last night. I hope no one was offended by my oops.

As a descendant of Irish-American immigrants around time of the insult (see username), I'm aware that the group faced racism and injustice, but it doesn't come up. Some other groups obviously have faced worse in the US, and some continue to face injustice, and I guess I'm more sensitive to those.