melancholic. In a few words it explains how in the Nazi camps the prisoners were obliged to wear fabric

triangles on their uniforms, painted in different colours according to the category they belonged to in

order to be immediately identified. Jews wore a yellow triangle overlapped by a David star. Political

prisoners (communists and trade‐unionists) wore a red triangle, homosexuals a pink triangle and Jehovah's

Witnesses a purple triangle. Green triangles belonged to the "common criminals", black triangles to the socalled

"asocials", brown triangles to Gypsies, white triangles to work strikers and, finally, blue triangles to

war prisoners from occupied countries.