A couple of things that should be known to give context to this video.
The chopped Santa hat seen in this video can only be worn by a person who is a graduate of the most prestigious institute of Islamic learning in the world by literally an order of magnitude. To paraphrase Stephen Coughlin on this, where Al_Azhar is #1, there is no number 2 and so on down to about 12 where the next one is. Al-Azhar is essentially Oxford, Yale, Harvard and the Vatican rolled into one.
So when you see a Santa-parae like this one protesting in front of the Russian embassy, presumably about the bombing of the Islamic State, it becomes rather more difficult to claim that the Islamic State is not truly Islamic. Now I do not speak Arabic so its possible that in fact they are protesting the treatment of lab animals or GMO foods in Russia, but I would wager that when Rita Malek gets back to me on this, they are protesting Russian expeditions against IS targets.
It is also possible that judging by the signage they are spinning it as Russia supporting Assad and that is killing muslims or whatnot. But that is onion paper at best as many islamic groups have already sent out instructions for muslims to start attacking targets in Russia as a response to bombing IS targets.