France, April 9 -- France is once again grappling with the rise of far-right extremism, as a fringe group's propaganda at a weekend rally- in support of National Rally figurehead Marine Le Pen - has promped legal action from racial justice group SOS Racisme.

A French anti-racism group has filed a legal complaint against the far-right fringe organisation Luminis Paris, following the circulation of flyers near a demonstration held for Le Pen's National Rally party in Paris.

The flyers, handed out on Sunday close to the political meeting, featured an image of a bloodied knife alongside the call to action: "French people, fight back".

One line read: "French people, today the foreigners come into our arms to slit the throats of your sons an...