MEP Luke 'Ming' Flanagan, from Castlerea, believes the government needs to come out and contradict the view that unvetted people are coming into the country.
His call comes after an investigation is under way into a suspected arson attack at a site in Dublin that was being renovated for asylum-seekers.
The lobby of the former Crown Paints factory in Coolock went on fire last night, just days after violence erupted outside.
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On Monday, bricks and missiles were thrown at gardaí, while pepper spray was deployed by the Public Order Unit.
Speaking to the Joe Finnegan Show this morning, Ming said its crucial to get the truth out to the public:
