Poland's chief rabbi Michael Schudrich unveils a mezuzah at the entrance of the Museum of the History of Polish Jews in Warsaw, Poland, Sunday, April 14, 2013. A mezuzah is parchment with Hebrew scripture contained in a decorative case, and the ceremony was part of a month of events that got underway Sunday marking the 70th anniversary of the Warsaw ghetto uprising, The key event comes Friday with state ceremonies led by Polish President Bronislaw Komorowski, and the museum will also open that day, albeit without its permanent exhibition. (AP Photo/Czarek Sokolowski)