Thousands of Moroccans have held massive demonstrations to condemn Washington's move to relocate its embassy from Tel Aviv to Jerusalem al-Quds.
More than 10,000 marchers poured onto the streets of Casablanca, Morocco's largest city and main port, on Sunday.
The demonstrators condemned the relocation of the US embassy. They said the holly city would remain the eternal capital of Palestine.
The angry protesters chanted slogans such as "Death to Israel" and carried Palestinian flags and placards that read "Al-Quds (Jerusalem) Palestine's eternal capital".
The demonstrators also reaffirmed support for the Palestinians' struggle to attain their legitimate rights, including their right to return to their homeland and establish their independent state.
The Casablanca protest had been organized by a coalition of four parties including the Islamic opposition group al-Adl Wal Ihsan, which is seen as Morocco's most powerful group in terms of rallying supporters on the street.
A massive march was earlier held in the capital Rabat, which commemorated Nakba Day (Day of Catastrophe), and expressed solidarity with the Palestinian people.
At least 65 Palestinians were killed and more than 2,700 others wounded near the Gaza fence on the eve of the 70th anniversary of Nakba Day, which coincided this year with the relocation of the US embassy.
Muslim leaders, who recently gathered in Turkey for an special summit on recent killings in Gaza, have called for an international force to be deployed to protect Palestinian people against Israeli crimes.
In a final communiqué issued following an emergency meeting in Istanbul on Friday, the Organization of Islamic Cooperation (OIC) said the May 14 massacre of dozens of Gazans amounted to "savage crimes committed by the Israeli forces with the backing of the US administration."