Greeks hurl stones at police who respond with tear gas outside a trade fair Saturday.
Angry over an austerity program, labour unions, civil servants, students and taxi drivers gather outside fairgrounds where Prime Minister George Papandreou is speaking.
Police detained 106 people as masked protesters burned trash bins, chairs and other objects.
Despite public uproar, the prime minister said Greece is committed to meeting the conditions of its international bailout.
(SOUNDBITE)(Greek) PAPANDREOU, SAYING (STARTS WITH WIDE CUTAWAY) :
"We made a decision to wage a battle in order to avoid a catastrophe, a catastrophic bankruptcy for the country and its people, to stay in the euro, and this means difficult decisions, difficult sacrifices."
Nearly two years of reforms, pay cuts and tax increases have failed to revive the economy.
Senior euro zone officials have cast doubt that the country can avoid bankruptcy or stay within the euro currency.
Lindsey Parietti, Reuters
