The Croatian pro-Ustasha Right has been trying to deny the historical truth regarding the Holocaust in Croatia in various ways for decades.
The Mass is part of annual commemorations that Croatia introduced three decades ago for the tens of thousands of Croatian and Bosnian Ustasa members and their supporters.
The veneration of pro-Nazi war criminals is not unique to Croatia in Eastern Europe.
"We cannot and will not accept the reluctance of authorities regarding judgement of the Ustasha regime's character and policy of non-reaction to its symbols."
Director Jakov Sedlar accused of distorting Holocaust history.
Efraim Zuroff, the chief Nazi-hunter of the Simon Wiesenthal Center took Netanyahu to task for not citing instances of Croatian Holocaust revisionism.
Wiesenthal Center protests Croatian high school that refused Anne Frank exhibition.
The genocidal campaign waged by the Ustasha regime against Serbs and their active participation in Holocaust crimes against Jews are among the most heinous crimes of World War II.
As a handful of new Auschwitz-related trials get underway, Jens Rommel says his work is getting more difficult every year and yields only modest results. But it still matters.