 Polish flags and other symbols were confiscated . The war on the Polish language included the tearing down of signs in Polish and the banning of Polish speech in public places . Persons who spoke Polish in the streets were often insulted and even physically assaulted . The Germanization of place names prevailed . Many treasures of Polish culture – including memorials , plaques and monuments to national heroes ( e.g. , Kraków 's Adam Mickiewicz monument ) – were destroyed . In Toruń , all Polish monuments and plaques were torn down . Dozens of monuments were destroyed throughout Poland . The Nazis planned to level entire cities . 
 Polish flags and other symbols <a href='uninflect' title='1'><mark>were</mark></a> confiscated . The war on the Polish language included the tearing down of signs in Polish and the banning of Polish speech in public places . Persons <a href='null_relcl' title='2'><mark>who</mark></a>spoke Polish in the streets <a href='uninflect' title='3'><mark>were</mark></a> often insulted and even physically assaulted . The Germanization of place names prevailed . Many treasures of Polish culture – including memorials , plaques and monuments to national heroes ( e.g. , Kraków <a href='null_genetive' title='4'><mark>'s</mark></a>Adam Mickiewicz monument ) – <a href='uninflect' title='5'><mark>were</mark></a> destroyed . In Toruń , all Polish monuments and plaques <a href='uninflect' title='6'><mark>were</mark></a> torn down . Dozens of monuments <a href='uninflect' title='7'><mark>were</mark></a> destroyed throughout Poland . The Nazis planned to level entire cities . 
Polish flags and other symbols was confiscated . da war on the Polish language included the tearing down of signs in Polish and the banning of Polish speech in public places . Persons spoke Polish in the streets was often insulted and even physically assaulted . The Germanization of place names prevailed . Many treasures of Polish culture – including memorials , plaques and monuments to national heroes ( e.g. , Kraków  Adam Mickiewicz monument ) – was destroyed . In Toruń , alll Polish monuments and plaques was torn dwn . Dozens of monuments was destroyed throughout Poland . The Nazis planned to level entire cities .