Greek Public Order Minister Nikos Dendias described the killing as an `` abominable murder ... by an attacker who , according to his own statement , sympathizes with Golden Dawn , thus illustrating in the most obvious way the intentions of neo-Nazism . '' Prime minister calls for calm after clashes in an Athens suburb . Leftist protesters clash with police after the death of a popular anti - fascist activist . A nationalist Golden Dawn party supporter is accused of killing leftist activist George Costa . Opposition leaders renew calls to ban the party , which has grown in influence .
Prime minister calls for calm after clashes in an Athens suburb . Leftist protesters clash with police after the death of a popular anti - fascist activist . A nationalist Golden Dawn party supporter is accused of killing leftist activist George Costa . Opposition leaders renew calls to ban the party , which has grown in influence .