Holocaust survivors sing the Israeli national anthem, knowing they would be arrested for trying to enter British-mandated Palestine and the future Jewish state.

The head of the Buchenwald Memorial site on Thursday blamed growing right-wing populism in Europe for an incident in which members of a British neo-Nazi group appear to have performed a "Hitler salute" at the former Nazi concentration camp.

German far-right politician Marcel Zech was found guilty of incitement for showing a tattoo of what appeared to be the Auschwitz death camp while visiting a swimming pool.