Is it allowed to hold Islamic prayers in the streets of Catholic Malta, shouting “Allah u Akhbar”?

Just wondering again, like some Maltese policemen seem to, too (or don’t they?)…

Another question: I’m sure that Catholics often do prayers in the streets here too. But I think they have to ask for a permission, even though Catholicism is the State religion here. Did the Muslims in the video have one (a permission), or did they have only one for a (protest) demonstration? Or was that, the “prayer”, just a piece of art, protected by the right to freedom of expression anyhow?