translator: of course i wear a yi don t mean ka at home. i think that as well as being vigilant we must tackle the evil at the root of the problem and that is about being different. reporter: the holocaust killed an estimated 6 million jews in europe. as living memory gives way to fading footage, so denial grows and hate speech returns. as well as the tension around covid lockdowns, the violence between israel and hamas in the middle east also drives hate towards jews across europe, like here in berlin or in brussels. indeed the technical increase