The Challenges of constitutionalism. Pierre de Vos on Breytenbach case The Challenges of constitutionalism. Pierre de Vos on Breytenbach case Share this: Click to share on X (Opens in new window) X Click to email a link to a friend (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on LinkedIn (Opens in new window) LinkedIn Like Loading...