The unrest continues in Greece.
This protester argues with riot police.
Moments later they respond with force.
Scuffles and clashes erupted across the capital Athens during a day that saw a wave of strikes and demonstrations from workers.
Several rounds of tear gas were fired by police at protesters who responded by throwing stones.
The earlier march of thousands was organised by union members and workers from the public sector who held a 24 hour general strike.
Demonstrators are angry at the Greek government's latest toughening of austerity measures, and call this the start of a campaign to derail the plan.
The government says the cuts are necessary in order to secure a new tranche of aid from the EU and IMF, needed to save the country from bankruptcy.
Simon Hanna, Reuters.