Environmental campaigners have called on the Government to sign up to an international treaty banning any further exploration for oil or gas.
They also called for a date to be set for a ban on new heating boilers in homes and businesses.
Friends of the Earth, which organised the protest on Sandymount Strand in Dublin, said it was part of a global day of action against fossil fuels ahead of this week's UN summit in New York.
Its Chief Executive Oisín Coughlan said: "Now we need to destroy demand, drive down demand for fossil fuels, disconnect data centres, no more data centres, stop putting boilers into homes and industry in the coming years so we don’t need fossil fueels and we can move to a cleaner, greener safer future."
He added: We’re in a race between tipping points, between the ecological and climate tipping points that are heading us towards disaster and social and political transformational tipping points that could lead us to safety."
Also speaking at the protest, Trocaire CEO Caoimhe de Barra said: "The climate crisis is having a disproportionate effect on the poorest people in the world, on people who live in very fragile contexts, from east Africa to southern Africa.
"We’re seeing communities having their entire villages swept away by floods, we’re seeing droughts that last years and years wiping out people’s livelihoods.
"It’s terribly unjust because people in the countries..that are most affected by climate change have done least to cause this crisis."
She added: "The impacts from climate change have become more evident this year with record-breaking and extreme weather events in many countries."
Ms de Barra said the impact of climate change in the countries where Trocaire works is becoming more severe.
She said: "We’re seeing much more frequent and much more intense disasters.
"Those are floods, typhoons, hurricanes, so people really don’t get a chance to recover from the last disaster before the next one is hitting them."
