Thousands of Orthodox Jews and civic groups attended a demonstration against Nazism in front of the Parliament building in Budapest.
The rally was held after a Hungarian far-right opposition politician Marton Gyongyosi, urged the government to draw up lists of Jews in Hungary's Parliament and government who pose a "national security risk." The event stirred outrage among Jewish leaders who saw echoes of fascist policies that led to the Holocaust.
Some posters held by protesters mocked Gyongyosi by showing him with a Hitler moustache and the crowd chanted "Jobbik go away!"
Gyongyosi later apologized for his statement, but added that Hungary needed to be wary of "Zionist Israel and those serving it also from here." The government also released a terse condemnation of the remarks.
Some 550,000 Hungarian Jews were killed in the Holocaust. Hungary's Jewish population is now estimated at 100,000.