I hate racism. I always have. I have reason to. As someone who appears to have all the characteristics that have offered undue advantage (white, male, etc.,) I have most definitely experienced racism.
Maybe people don’t recall now how the Irish were once treated in this country. I lived that experience when growing up. If anything identities you as Irish when you don’t otherwise sound it the name Murphy does.
The casual name calling was normal, whether it be Paddy, Spud or whatever.
The way he describes his background he’s about as Irish as I am. That is, not, but close enough to be eligible for the passport.