Israel's attacks on Gaza were protested with marches Saturday in Spain, Portugal, Greece, Germany, Italy, France and the Netherlands.
Thousands marched in Madrid to support Palestine.
They gathered in the city center of Madrid on the call of non-governmental organizations and participated in the demonstration organized under the title "We condemn the genocide and Zionist massacre in Gaza."
Thousands holding Palestinian flags criticized Israel and its collaborators -- the US and the European Union.
Carrying banners that read: "This is not a war but genocide", "Free Palestine", "Not in my name" and "Murderer Israel", protesters delivered the message: "No to genocide in Gaza, occupation in Palestine, apartheid, ethnic cleansing and settler colonialism."
Demonstrators demanded that the Spanish government and the international community take "urgent, concrete and effective measures against Israel, to stop arms trade with Israel and to boycott Israeli companies involved in the massacre."
Hundreds also rallied in Athens to show solidarity with Palestinians and denounce the relentless Israeli attacks on Gaza, which has killed nearly 35,000 civilians, including women and children.
The group, which consisted mostly of left-wing students, activists and representatives of trade unions and as well as Palestinians living in Athens, carried Palestinian flags and banners to demand an end to Israeli attacks on Gaza and the formation of an independent Palestinian state.
The rally was peaceful and ended without any incidents.
In Amsterdam, approximately 15,000 people gathered and protested against the Nakba (Great Catastrophe) and Israel's attacks on Gaza.
The demonstration was organized by pro-Palestinian organizations in Dam Square.
Speakers criticized police violence against protests that started May 6 at the University of Amsterdam. They said freedom of expression and the right to protest cannot be prevented.
The demonstrators carried banners that read: "Oppression will not last forever, Israel will be defeated", "Palestine will be free from the river to the sea", "Ceasefire now", "Stop the genocide" and "Genocide is happening in Palestine."
The demonstration, which also included Palestinian flags, chanted: "Free Palestine", "Shame on you Rutte, your hands are bloody" and "Israel bombs, the Netherlands pays."
Nearly 3,000 people in Berlin protested Israel's attacks on Gaza and Germany's arms supply to Israel as they gathered at Oranienplatz in the Kreuzberg district and marched toward Hermannplatz.
Demonstrators demanded an end to the genocide in Gaza, chanting slogans such as "Israel is a terrorist state", "Germany finances, Israel bombs", "Freedom for Palestine" and "Long live Palestine.".
Speeches stressed that Germany is complicit in war crimes by supplying weapons to Israel.