In the autumn of 1534, a wave of anti-Catholic sentiment erupted in Paris and spread to other cities through the dissemination of provocative posters. These posters were specifically designed to champion the ideas of Huldrych Zwingli, a leading figure in the Protestant Reformation known for his radical views on the Mass. Zwingli's position rejected the Catholic doctrine that the bread and wine used in the Eucharist physically transformed into the body and blood of Christ, advocating instead for a symbolic interpretation of these elements as commemorative rather than miraculous.

The posters featured bold imagery and impactful slogans that resonated with a populace increasingly aware of the moral and ethical controversies surrounding the Catholic Church, such as the sale of indulgences and clerical corruption. This grassroots movement showcased the growing influence of reformist ideas as they gained traction among the laypeople, igniting discussions about faith, authority, and the role of the church in everyday life. The widespread placement of these posters in public squares, churches, and along bustling streets was a strategic move to capitalize on the public's discontent.

The timing of this event was pivotal as it coincided with broader movements across Europe questioning the Catholic Church’s authority. In addition to Zwingli, figures like Martin Luther were also gaining prominence for their own challenges to Catholic teachings. The posters marked a significant moment in the Reformation's progression in France, positioning Zwingli’s ideas as a rallying point for Protestants disillusioned with the institutional church. Over time, these public proclamations contributed to the fractures in Western Christianity, ultimately leading to permanent divisions between Protestant and Catholic communities.