A pro-French march has been called in New Caledonia for next Friday to coincide with a visit of the French president Emmanuel Macron.
The so-called blue-white-red march in central Noumea is being organised by some anti-independence parties to show the president that most New Caledonians want to stay French.
A referendum on independence from France is to be held on November 4.
Anti-independence politician Sonia Backes said many elements of Mr Macron's visit focused on the identity of the indigenous Kanak people, such as the customary Senate and the Tjibaou centre.
He would also travel to Ouvea to the tomb of the 19 Kanaks shot dead during the 1988 hostage crisis, she said.
Another politician, Gil Brial, told the local public broadcaster they want all Caledonians whose heart beats for France to show Mr Macron and the rest of France that they want to stay with the republic.
Mr Macron is due on Thursday.
During his visit, he is also set to address the Pacific Community (SPC) which is headquartered in Noumea.
His predecessor, Francois Hollande, also visited New Caledonia and addressed the SPC.