Three.

(http://www.english.illinois.edu/maps/holocaust/photoessay.htm)

This picture is of the main entrance to Auschwitz where there is a gate sporting it's motto "Arbeit macht frei" or "Work makes one free." This makes me remember when Elie and his father arrived at this camp and the irony of another sign saying "Danger of death." I think of the irony that these things had. They were always in danger of death and were most certainly not free. Many people died in this camp and these signs were almost ridiculing their lives there.