Clapping and chanting songs, the refugee protesters were boisterous but peaceful.
Some held up signs pleading for help from Germany, a favoured destination for many migrants and refugees who arrive in Greece from the nearby Turkish coast.
Riot police arrived and faced off with the protesters and were briefly pushed back as the sizeable crowd moved towards them.
More than 12,000 people who had been living in and around Moria were left homeless by two consecutive fires on Tuesday and Wednesday night. Greek officials said the blazes were deliberately set by some of the camp’s residents angered by isolation orders issued to prevent the spread of the coronavirus after 35 residents were found to have been infected.
They slept in the open for a third night, some cutting down reeds and using salvaged blankets to make rudimentary shelters to protect them from the night-time chill and the scorching day-time sun.
Others used tents or had just sleeping bags to protect them from the elements.
The camp had been under lockdown due to last until mid-September after the first virus case was identified in a Somali man who had been granted asylum and left the camp, but later returned to Moria from Athens.
More No Comment
Palestinian youth determined to continue parkour despite losing leg
Kenyan inventors create bio-robotic arm controlled by brain signals
Britons break out sledges to enjoy snow during national lockdown
French city of Valloire holds 38th snow sculpture competition
Bolivians hope for health at this year's scaled-back Wish Fair
The Swiss art of automata now part of UNESCO's intangible heritage
Ultra-Orthadox Jews clash with Israeli police over COVID restrictions
Eleven Chinese miners saved as rescuers race to find remaining ten
Portugal votes for new president at height of COVID pandemic
Hong Kong puts 10,000 people into lockdown - the city's first
Britons in tears after floods damage homes for second year in a row
Police clash with protesters at pro-Navalny demonstration
Beijing starts second day of mass COVID testing for residents
Police detain protesters in Russia during pro-Navalny rallies
Heavy rain helps bring Western Balkans' waste problem into view