An anti-racism group has warned people who dress up in blackface that they risk being accused of racism.
Conor McGregor’s mum Margaret sparked criticism online for controversially painting her face black for her Halloween costume.
The chief of migrant and refugee support organisation Doras told the Irish Mirror that people “need to question” their actions.
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John Lannon said: “It sounds like this was inappropriate.
"People should be respectful of others.
“We can’t make statements or judgements that someone has been racist, but it is important how they are perceived.
"The people who are doing the act need to question themselves.”
Multi-millionaire McGregor’s mother Margaret was videoed wearing black face in footage shared by her daughter Erin.
Margaret posed for pictures with her famous UFC star son Conor, 34, from Dublin, and in other images along with children.
Erin said: "Mad Magzer loving the Halloween vibe".
Before Halloween, people were reminded of their Halloween choices by BBC TV Clothes Show presenter Caryn Franklin, 63.
She said: "If it’s not our culture, and we wish to avoid inflicting further hurt, let’s leave well alone and explain our choices to our children.”
Wearing black face has been particularly controversial since the Black Lives Matter protests highlighted concerns worldwide in 2020.
Episodes from TV shows like Little Britain, starring David Walliams and Matt Lucas, were removed from Netflix for the use of black face.
Producers said "times have changed" since the show first aired in 2003.
The European Network Against Racism (ENAR) in Ireland published a report in 2015 to highlight concerns, including the “emergence of black face”.
The report detailed how a white Irish family member of a black child complained about the potential impact of “racialised Halloween costumes”.
"The report stated that black face was "more than just burnt cork applied as makeup" and pointed out that painting black faces on white people had been regarded as problematic "since it began with the Minstrel shows."
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