President of Socialist Party Paul Magnette was also among the demonstrators. He shared a video from the protest on X, and repeated call for an immediate truce in Gaza.
Belgian officials have been criticizing Israel's violence against the civilians in Gaza.
Development Cooperation Minister Caroline Gennez said on Friday Belgium reaffirms full support for the ICJ, and if the world court calls on Israel to cease its military campaign in Gaza, "our country will fully support it."
"Steps in right direction. Our country is taking its responsibility, for human rights & humanitarian law. Meanwhile, I remain committed at all levels to making full humanitarian access to Gaza a reality as soon as possible," she said on X.
