For a long period it was against the law for an Irishman to own a horse worth more than 5 pounds. Englishmen could assault an Irishman with a horse worth 50 pounds, steal it, and throw a 5 pound note at the owner's feet, and the (English) magistrate would say that no offence had been committed. A young Catholic Irishman who converted to the Protestant branch of Christianity would get title to his Catholic father's house and could evict his family or charge them rent. There were also more systemic laws limiting Irish peoples' access to education and careers.
But the Irish remained the top ethnicity in Ireland and their population increased fast for most of that period, so I have no clue what the IRA were going on about.
Melissa Chan is a Gordon Chang-level troll. Not a journalist.
Wire me $1000 and I'll produce video testimony of an Asian-looking person alleging literally any atrocity you want by China/Russia/Iran.
Unverifiable testimony not made under oath and grainy Google Earth screenshots are simply not reliable evidence in the current year.
As for actual evidence, PRC publishes their census data online for everyone to see. If you don't believe that, you can look up "Ürümqi street" on YouTube and get a ballpark figure for how many Turkic people and cultures are represented there. If you still think there is Holocaust 2.0 going on in Xinjiang, you are ideologically poisoned beyond reason.
But the Irish remained the top ethnicity in Ireland and their population increased fast for most of that period, so I have no clue what the IRA were going on about.