Why was there anti-IRISH sentiment in the United States?

because they were Catholic

Because they were the first Mexicans.

youtube.com/watch?v=_ThaS47rqlE

They were parasites who were refusing to assimilate.

Why though, never understood this.

Pic. related.

Attached: 12.png (188x366, 42K)

Everyone loves Irish people. British people on the other hand...

This is true.

Why are the British so anti Irish? Was there some huge offense to Islam given?

Its only the English that we don't get along with really. Scots and Welsh are quite based.

Do Brits and Irish still hating each other?

Not always trustworthy: the Batallón de San Patricio (St. Patrick’s Battalion) was a battalion of Irish emigrant deserters from the US army who placed loyalty to their religion ahead of loyalty to their adopted homeland (that had given them shelter and employment) to fight for Mexico against their former comrades. Still celebrated in Mexico today and at least as recently as 1997 in the Republic of Ireland.
trussel.com/hf/inglorio.htm
star-telegram.com/opinion/opn-columns-blogs/bud-kennedy/article139012213.html
articles.latimes.com/1997/sep/16/news/mn-32977
For interest:
‘“No Irish Need Apply”: A Myth of Victimization’ by Richard Jensen, 2004: rjensen.people.uic.edu/no-irish.htm
‘No Irish Need Apply?’ by Richard Jensen, 2015: historynewsnetwork.org/article/160234
It’s only Irish republicans we have a problem with—planting bombs in our pubs and shopping centres tends to cause some dislike. But the ordinary decent Irishman is fine—positively celebrated independent.ie/irish-news/queen-gives-irish-soldier-medal-for-acts-of-bravery-26812693.html

Irish bros helped vs Americans, they are always welcome here.

Look at that guy in pic, hand in girls purse.