The Labour Party switched locations for an event marking 10 years of marriage equality, with the party saying it changed from the original venue in Dublin 8 due to a threat of a far-right protest.
It is understood that staff at the venue were concerned for their safety after a planned protest was publicised on social media.
The meeting which was addressed by Labour leader Ivana Bacik and former leader and tánaiste Eamon Gilmore later took place at the Outhouse LGBTQ+ Centre.
A Labour spokesperson said there were some protests in the vicinity but not at the venue.
They added that there was huge solidarity from other parties across the left with Micheal Pidgeon and Patrick Costello of the Green Party, Social Democrats TD Jen Cummins and Kourtney Kenny of Sinn Féin in attendance.
In a message to its members earlier this evening, the party said: "We must stand strong. The far-right cannot stop us from coming together to celebrate ten years of marriage equality, and they cannot stop us from asking 'what's next?’ for LGBTQ+ rights.
It added: "The events of the last few days have only served to emphasise the importance of that question. No pasarán."
Labour leader Ivana Bacik described the threat of protests at the event as "a great shame".
"Like many groups which have been historically marginalised in Ireland, the LGBTQ+ community has had to fight for its rights, often in the face of intimidation," she said.
She added: "Labour has always been proud to stand with them in that fight, whether it was for the decriminalisation of homosexuality, for legal protections from employment discrimination, for the right to marry, for gender recognition laws, for access to PrEP and other prophylactics, and more.
"More recently, Labour was one of few political parties in Ireland to remain steadfast in our support for the introduction of stronger hate speech and hate crime legislation."
