I think the opening quotes in How the Irish Became White tell an amazing story in just a few sentences:
The Irish, who, at home, readily sympathize with the oppressed everywhere, are instantly taught when they step upon our soil to hate and despise the Negro.... Sir, the Irish-American will one day find out his mistake.
— Frederick Douglass, May 10, 1853
Passage to the United States seems to produce the same effect upon the exile of Erin as the eating of the forbidden fruit did upon Adam and Eve. In the morning, they were pure, loving, and innocent; in the evening guilty.
— The Liberator, August 11, 1854
The Irish are the blacks of Europe. So say it loud— I’m black and I’m proud.
— The Commitments, 1991
Paddy might have worked as an insult way back when we thought America was anything else than a huge fucking mistake. Today it's a badge of honour—the worst thing to ever happen to the Irish was "becoming white".
Could be referring to Bluesky's silencing of Palestinian voices.
I've seen the open letter linked in that article shared a few times on Mastodon. I'm not sure how big a deal 3000 boosts makes it on Bluesky. But browsing the thread quick and seeing it full of posts shared by the publisher of the letter being deleted is a bit worrying.