Golden Dawn supporters rally following arrests
28 September 2013 Last updated at 14:36 BST
Supporters of the far-right Golden Dawn party have gathered outside police headquarters in Athens, after the party's leader, Nikolaos Michaloliakos, three more MPs and 13 others were detained.
The arrests come amid anger over the murder on 18 September of anti-racist musician, Pavlos Fyssas.
The BBC's Mark Lowen visited the scene of the protest in Athens and described the atmosphere as "extremely difficult".