In Gland, Switzerland, S.I.D. is highlighting essential workers of all kinds with his graffiti art to show his appreciation. 'Today, I will especially pay tribute to cashiers. They are on the front line with nurses and others. So, it is for our everyday superheroes,' S.I.D. said. In the coming weeks, artist S.I.D plans to create more portraits of coronavirus essential workers like construction workers, garbage collectors, and more.