St. Patrick's day encourages and perpetuates the idea of whiteness and white culture. It otherizes non-whites and promotes nationalism. pic.twitter.com/AL2QQRJCk7— End St.Patrick's Day (@endstpats) February 4, 2017
This could be a prank, but it's hard to be sure. It is undeniable that multiculturalism has a creepy Year Zero aspect, which makes the above Tweet plausible. But that is not the same thing as proof that it is from someone who is being serious.
At any rate, have a blessed St. Patrick's Day!