パリ交通公団
In March 2015, the RATP Group refused to allow a poster for a concert Les Prêtres planned to hold to include information that the concert would be held for the benefit of Christians in the Middle East. The RATP Group said the poster's mention of sympathy with the Christians violated the group's standard on neutrality and secularity. This caused protests from the group and other public figures and a public debate over the issue. In April 2015, the RATP Group reversed their decision and allowed the original poster.