In France, Holocaust denial became more prominent in the 1990s as "négationnisme", though the movement has existed in ultra-left French politics since at least the 1960s, led by figures such as Pierre Guillaume (who was involved in the bookshop La Vieille Taupe during the 1960s). Elements of the extreme far-right in France have begun to build on each other's negationist arguments, which often span beyond the Holocaust to cover a range of antisemitic views, incorporating attempts to tie the Holocaust to the Biblical massacre of the Canaanites, critiques of Zionism, and other material fanning what has been called a "conspiratorial Judeo-phobia" designed to legitimize and "banalize" antisemitism.