Croatian usage of the Ustashe salute "Za dom spremni", the equivalent of Nazi salute "Sieg Heil", is not banned. It is deemed unconstitutional but allowed in "exceptional situations". In 2016, this salute was inscribed on a plaque that was installed near the site of Jasenovac, sparking a reaction from the Serb and Jewish community. It has also been chanted during football matches. Some Croats, including politicians, have attempted to deny and to minimise the magnitude of the genocide perpetrated against Serbs in the Independent State of Croatia. From 2016 to 2019, anti-fascist groups, leaders of Croatia's Serb, Roma and Jewish communities and former top Croat officials boycotted the official state commemoration for the victims of the Jasenovac concentration camp because, as they said, Croatian authorities refused to denounce the Ustasha legacy explicitly and tolerated the downplaying and revitalization of their crimes, which included the equation of these crimes with the communist crimes from 1945.