 This required every abattoir to stun animals before slaughter, including Jewish and Islamic ones.The plebiscite had been preceded by a long anti-Semitic campaign, in which Jews were supported by Catholics, who had suffered under Otto von Bismarck in his anti-Catholic "Kulturkampf".Catholic priests gave sermons encouraging their parishioners to vote against the effective ban, and the results of the referendum showed that French-speaking Cantons had voted against the ban, but that German-speaking Protestant cantons had voted for the ban.