In September 2012, the US government removed the PMOI from the state department's listof designated terroristorganisations, in part because of its co-operation in the move to Camp Hurriya.
The home secretary subsequently banned the group in November 2011, saying that it was the latest incarnation of a group already on a listof proscribed terroristorganisations.
Their solicitor, Jason McCue, said they also hoped the protest would put more pressure on the US Government to include the Real IRA on its listof "foreign terroristorganisations".
Officials added that a separate classified list has been agreed oforganisations and individuals suspected ofterrorist links and subject to investigation by European police forces.