[quote MarDhea]@kurtainwoz Well it's a big enough thing that it made me leave England and return to Ireland (in very recent years). I just finally had enough and I didn't want my kids growing up there.
There's a lot more to anti-Irish sentiment than death threats and searches, which thankfully don't really happen any more. Being threatened with violence for being Irish does happen, though. And verbal abuse. And snide comments. And mockery. And being passed over for jobs. And more. I experienced or witnessed all those over years of living in the UK, rarely at first but a lot more after 2015 or so. It really, really wears you down after a while, and all the perfectly lovely British people I knew weren't enough to compensate for it.
I gather from your posts that you grew up in England to Irish parents - with respect, that means you won't see the vast majority of anti-Irish sentiment that is thrown at someone with an Irish accent, who becomes a target for a certain type of racist from the moment they open their mouths. 
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This absolutely reflects my experience as an Irish person studying, living and working in professional jobs for more than 20 years in different parts of England. Lots of microaggressions, mimickings of accent, ostentatious surprise at an Irish person in my particular field and level of education, regular casual assumptions of terrorist sympathies or connections and that I must drink heavily, do what priests told me, be extremely superstitious and come from extreme poverty (worse outside of London, more prevalent in older white people -- obviously only a minority of people, but it wasn't pleasant, and it occasionally blind-sided me from someone unexpected, or wrecked a social occasion).
Despite having also great affection for England, especially London where we lived for a decade, we also left in 2019 -- Brexit seemed to have inflamed xenophobia, and we didn't want our child to grow up dealing with that.