Léo Lagrange
A member of the "Éclaireurs de France" scouting association during his youth , he joined the French Section of the Workers' International ( SFIO , socialist party ) after the split at the Tours party congress in 1920 and wrote articles in "Populaire" ( Popular ) , the press organ of the SFIO . 
<triplet> Populaire <subj> French Section of the Workers' International <obj> publisher