Čeněk Růžička, chair of the Committee for the Redress of the Romani Holocaust in the Czech Republic (VPORH), has criticized the absence of any systematic research into the causes and consequences of what happened to Romani and Sinti people during Nazism and the sharing of such information with the public. "For example: How did the arrest of the Romani families by the individual stations of the gendarmerie take place during the Protectorate era? What exactly was confiscated from each family, never to be returned? How did the collaboration of the Czech Protectorate’s Interior Ministry with the Nazis work when it came to the persecution of the Roma?" he asked during last week's commemorative ceremony, during which he also clearly spoke out against xenophobic populists.