Greek police detained 15 members of the left-wing Nea Aristera (New Left) party on Wednesday morning after they unfurled a Palestinian flag at the Acropolis.
Among those taken into custody were members of the party’s youth group.
The protesters, who chanted “Free Palestine” and “Stop the Genocide,” were accused by authorities of unauthorised protest action.
In response, Nea Aristera criticised police for displaying “special zeal in carrying out their duties.”

The party issued a statement accusing the Greek government and Prime Minister Kyriakos Mitsotakis of “supporting the war criminal Netanyahu” through silence and tolerance of his actions.
“Solidarity and the demand to end the war are not criminal acts,” the statement read.
“Palestine must live; the Palestinians are not alone. We demand the immediate release of those detained.”
Gabriel Sakellaridis, general secretary of Nea Aristera, posted on social media: “Repression will not prevail. Full solidarity with the martyred Palestinian people.”