Greece train crash protests turn violent as victims identified

Tuesday's head-on collision between a passenger train and a freight train in Greece was so catastrophic that many of the 57 people killed have had to be identified using their DNA.

In the days since the accident, Greek train services have been at a standstill with rail workers in protest at what they say is the failure of successive governments to improve rail safety.

And across the country thousands of people have joined angry demonstrations demanding accountability.