In 1523 a disputation was held in Zurich where Zwingli presented his arguments; the city council was persuaded and in 1524 ordered that the churches be emptied of religious images.
Editors. "Ulrich Zwingli preaches evangelical sermons that challenge the Catholic church in Switzerland". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=9931, accessed 14 February 2016.]