Yes and while some DAESH types might invent this as a reason, it is a post facto rationalisation.
If there were a point of attention it would be among the descendants of the expelled ones later when the Catholic Monarchs as they called themselves broke the treaty of Granada.
But it is not a real political sentiment, if there are real sentiments, it is about current politics.
The Spanish protectorate meaning the colonial conquest with the French assistance from 1900 forward. Very kind of the France to help.
The murderous criminal DAESH of course do not care they killed and maimed even the fellow Muslims… (not that the citizens of the countries like the France or the England etc. could not also be). Barcelona is very popular among the Maghrebine middle classes for the summer vacation and when I was there just a few weeks ago la Rambla was full of the families from the Maghreb, even some I recognized, it was funny running into someone I know from work there by random
These murderous idiot criminals of course declare takfir on anyone not accepting their perverted pseudo theology.
[ETA it is reported by the Moroccan press that among the injured in the very grave condition is a little six year old moroccan kid on vacation with his family - this murderous criminal idiot Moussa Oubkir by his own theology has broken an innocent and will burn in hell]
With a facebook page showing the berberiste nationalist flag, it is very possible. It is not usual for takfiri salafiste sympathy to go along with the display of this flag, as the sentiments of the berberist mouvement are mostly considered by the salafistes as kufr and dividing the umma of their vision (hypocrisy of course). The berber flag is very strongly associated among the maghrebines with the tendencies not compatible with the salafistes.
Of course people change and hold incoherent opinions and orientations sometimes.
pity he is dead it would have been useful to interrogate him.