A Book, entitled "How Polish People Helped Germans Murder Jews;" was published recently (January 2013) in Poland.

Xhttp://www.czarnaowca.pl/literatura_faktu/jak_polacy_niemcom_zydow_m,p720952114
I hope it will be translated into English. The author, Stefan Zgliczynski, is a journalist associated with the Polish version of Le Monde Diplomatique. His book generated many interesting comments on a Polish website:

„Jak Polacy Niemcom {ydów mordowa pomagali”. Recenzja ksi|ki - Forum - Polityka.pl

The link below will take you to selected observations (translated by me).

Xhttp://csam.montclair.edu/~kowalski/xenophobia.html

Thay are worth reading and thinking about.