Employees of the city of Geneva are cleaning the Reformation Wall, which has been soiled with paints by unknown people, in the Bastions Park, in Geneva, Switzerland, Tuesday, July 16, 2019. During the night from Sunday to Monday, unknown people threw paint on the four Reformers, from left to right, Guillaume Farel, Jean Calvin, Theodore de Beze and John Knox. (KEYSTONE/Salvatore Di Nolfi/Keystone via AP)

Employees of the city of Geneva are cleaning the Reformation Wall, which has been soiled with paints by unknown people, in the Bastions Park, in Geneva, Switzerland, Tuesday, July 16, 2019. During the night from Sunday to Monday, unknown people threw paint on the four Reformers, from left to right, Guillaume Farel, Jean Calvin, Theodore de Beze and John Knox. (KEYSTONE/Salvatore Di Nolfi/Keystone via AP)