Gardai in Dublin are refuting claims by the Irish Anti-War Movement that the group were banned from marching on Grafton Street.
The Organisation had planned to march from The Central Bank on Dame Street to the US Embassy in Ballsbridge.
Richard Boyd-Barraet Chairperson of the IAWM said: "This is a political way to crack down on the substantial and growing anti-war movement in this country.
"It is also part of a more general crackdown by this state on peaceful demonstrations, which have been evident over the last year.
But the gardai have this evening issued a statement saying "at no stage have the gardai prohibited the planned protest to the US Embassy by the Irish Anti-War Movement. However, they will not facilitate the protest to follow the route proposed by the organiser, ie through Grafton Street.
"This is purely for reasons of public safety of the thousands of members of the public who are expected on Grafton Street area tomorrow in the lead up to the Christmas Shopping Season."