This is quite a sensitive question, so I hope everyone can answer objectively.
My girlfriend, from the Southern US, has only ever been called the N-Word on
holiday in Northern Ireland, never in her homeland or the various other European countries she'd visited. I thought that might be a Protestant-Catholic thing and so not representative of the Irish majority (she said the Protestant areas had lots of Confederate Flags, while the Catholics saw themselves as having faced similar prejudice to African-Americans, with property requirements for voting, etc.)
But a German friend of mine who worked in south-west Ireland (Cork maybe?) told me that once she was walking along with a black co-worker and a gang of locals ran out and stabbed him, shouting the N-word (they didn't know him or anything, just a random hate crime).
And I have heard various other anecdotal evidence that anti-Black racism is quite bad in Ireland. I do recognise this is all anecdotal, so here's an article based on a survey: https://www.irishtimes.com/news/politics/ireland-has-worrying-pattern-of-racism-head-of-eu-agency-warns-1.4032957
Interestingly, it seems the state actors are decent; unlike British police, who are often the main face of racism for Black Britons, the Gardai come out quite well. But overall people complain of more racism than in some other countries.
But this seems very strange to me.
The Irish never engaged in the African slave trade, they were never the people on top justifying their subjugation of others by dehumanising them. As people considered to be not really white by the British, I'd think there'd be a strong cultural push to oppose these kind of ideas. Whereas with racism in Britain, I understand more where it came from; ideas of cultural superiority, wanting to other your victims, blaming immigrants for social problems, etc, etc. I'm not necessarily saying Ireland has more racism than Britain, France, Italy, Spain, etc, but more that I'd expect there to be much less, and it doesn't seem there is.
This is a question that is hard to answer. There are many factors that are hard to identify so i will try mt best.
The Irish diaspora is represented in the Anglophone world not only by the country's inhabitants but by the descendents of emigrants in the USA.
That history has been marked by the conditions of mass migration at the time. This was at its height mid 19th century. It is portrayed in gangs of New York and the experience of Irish and black communities has been written about by Patrixk McKenna in "How the Irish became White" https://www.irishtimes.com/blogs/generationemigration/2013/02/12/when-the-irish-became-white-immigrants-in-mid-19th-century-us/
McKenna describes the bonds and tensions between black and Irish people rooted in the economic conditions of the time ie slavery/post slavery and a people escaping pplitical and economic oppression in Ireland. Reference is made to the pseudoscientific assessment of Irish and black genetics in this work, seeing the Irish and black population as inferior for biological reasons.
Interestingly, concurrent with that period Frederixk Douglas visited Ireland at the invitation of Daniel O'Connell who saw the abolition of slavery in the same vein of Catholic emancipation from penal laws in the UK, which included all.of Ireland at the time.
Douglas had this to say of Ireland "I gaze around in vain for one who will question my equal humanity, claim me as his slave, or offer me an insult. I employ a cab—I am seated beside white people—I reach the hotel—I enter the same door—I am shown into the same parlour—I dine at the same table—and no one is offended ... I find myself regarded and treated at every turn with the kindness and deference paid to white people. When I go to church, I am met by no upturned nose and scornful lip to tell me, 'We don't allow n****** in here!'" https://www.google.com/amp/s/www.irishcentral.com/roots/history/frederick-douglass-daniel-oconnell.amp
While this cannot be given as a co.prehensive account, it certainly gives a snapshot of the time.
Ireland, being largely rural and underdeveloped was a mass exporter of its population, up to 10 million over 200 years https://www.ucc.ie/en/emigre/history/
Therefore, any prejudice with regard other ethinicities was more likely to come from emigrants interactions abroad, bringing these attitudes home and our porpus Anglophone culture wedged beyween UK and USA.
Many Civil Rights activists in Northern Ireland drew inspiration from thr Black Civil Rights movement in the US in the 60s. Most notably Bernadette Devlin https://pbs.twimg.com/media/DCYUND1XkAQbZtx.jpg
All this considered, Ireland was not immune from global white supremacy.
As Irelands economy grew briefly in the 90s/2000s labour began to be imported instead of exported.
This became a political issue and an ammendment was passed as to niryhright citizenship https://www.rte.ie/news/ireland/2018/1019/1005296-deportation/
This measure, as well as the Direct Provision system of accomodation of asylum applicants are viewed by some as institutional racism against black amd other people. https://nascireland.org/campaigns/asylum-process-direct-provision
Some politions have tried to raise the issue of African migrants, portraying them in a negative light, garnering much controversy. https://www.rte.ie/news/ireland/2019/0912/1075478-grealish-oughterard/
While Ireland does not have a history of colonisation or slave trade, it does exist within a global economy and is subject to anglo-american cultural hedgemony. Racial discrimination exists here. It might not be as bad as other places, but this is hard to quantify
