With Henri Cueco , he co-founded the Syndicat national des artistes plasticiens CGT .
Pignon - Ernest joined the General Confederation of Labour ( CGT ) , one of the main labour unions in France .
With Henri Cueco , Pignon - Ernest co-founded the Syndicat national des artistes plasticiens CGT .
Pignon - Ernest joined the General Confederation of Labour ( CGT ) , one of the main labour unions in France .