if you want to understand why the history of racism against irish americans after the wave of immigration in response to the manmade famine doesn’t factor into racism irish americans experience today (none, zero, irish americans do not experience racism today), read my top level comment.
the defining factors are that irish americans were integrated into white supremacist power structures and black americans weren’t, that st. patricks day isn’t treated with any reverence in the united states and is instead one of the big four drinking holidays and the negative stereotypes of irish americans from the 1800s don’t survive today in word or in deed.
i chose not to touch on the lingering economic impact of racism against irish americans as opposed to racism against black americans because they’re in two different universes. one was largely dismantled before any of us were born and the other is still systemic and pervasive to this day.