In mid-March 2020, a metal fence appeared separating the lakeside green open space shared by the German city of Konstanz and Swiss Kreuzlingen. A silent protest against the closing of the border soon followed. Organisers invited everyone who was impacted or who wanted to participate out of solidarity to think about something they could bring to the fence: a photo, a letter, a lock, or something else creative. The invitation was to ‘Bring only positive items. No provocations and no rubbish’.