As a brazilian: yes, this is true. Here the news (in portuguese): http://g1.globo.com/pb/paraiba/noticia/2013/10/detento-faz-mascara-de-sabonete-com-rosto-de-agente-penitenciario-na-pb.html
TL;DR: prison agents thought it was an escape attempt, but the prisoner said he’s only an artist. He won’t be punished, by now, and they will help him and give more material to work.
