A referendum on public order was held in Switzerland on 11 March 1934. Voters were asked whether they approved of a federal law on maintaining public order. The proposal was rejected by 53.8% of voters.
Background
The referendum was an optional referendum, which only a majority of the vote, as opposed to the mandatory referendums, which required a double majority; a majority of the popular vote and majority of the cantons.
References
Swiss public order referendum, 1934 Wikipedia(Text) CC BY-SA