People participate in a march in Casablanca, Morocco, on May 20, 2018. Thousands of Moroccans marched Sunday here to protest the killing of Palestinians by Israeli troops on the Gaza border. (Xinhua/Aissa)

RABAT, May 20 (Xinhua) -- Thousands of Moroccans marched Sunday in the city of Casablanca to protest the killing of Palestinians by Israeli troops on the Gaza border.

In the march, dominated by Islamist and left-wing parties, protesters called for holding Israel fully accountable for the grave atrocities in the occupied Palestinian territory.

They vowed support to "the Great March of Return" which has been taking place in the besieged Gaza Strip since March 30, with thousands of Palestinians gathering near the Gaza border with Israel to demand their right of return to the villages and towns from which they were expelled in 1948.

They also reaffirmed the importance of the Palestinian cause to the Moroccan people, renewing support for the Palestinians' struggle to attain their legitimate rights, including their right to return to their homeland and establish their independent state.

The protesters condemned the relocation of U.S. embassy in Israel from Tel Aviv to Jerusalem, stressing that the holly city will remain the eternal capital of Palestine.

This march came one week after another one was held in the capital Rabat which commemorated the upcoming Nakba Day, or "Day of Catastrophe," and expressed solidarity with the Palestinian people.

Morocco has strongly condemned the shooting by the Israeli army at participants in the peaceful protests along the border between the Gaza Strip and Israel.

The North African nation slammed the Israeli action as against the international law, calling for peace and an end to the unacceptable practices that are worsening the situation.