Syrians living abroad have marched together in 21 countries worldwide against the Assad regime.
It was part of an Amnesty International global day of action to show support for the uprisings in the Middle East and North Africa.
In London, at least 1,000 members of the Syria diaspora came from across the UK to demonstrate against Assad and call for the international community to do more.
In the predominantly Arab Israeli city of Baka al-Gharbiya, Israelis and Palestinians marched side by side to call on Assad to step down amid reports of continued violence.
Israeli Russians gathered outside the Russian embassy in Tel Aviv to denounce Moscow’s use of its veto at the UN Security Council.
Russia had long enjoyed close relations with Syria.
It keeps a naval base and has strong trade ties with the country.