Far from being perfect and certainly not immune from far-right agitators. I do not know the facts of what sparked the violence, but I strongly suspect it was the far right who amplified this to cause the unrest. Ultimately, as Spain’s economic performance shows, immigration plays a key part.
Economically immigration has been good for Spain but they have always had a far right problem. They were a fascist dictatorship not that long ago and it has never really gone away. We have Reform, they have Vox; dangerous times in both countries.
They have but it tends to be situated in certain regions/municipalities. And agreed, the risk is always there and there is a genuine threat from the far right. Rural provinces in Andalusia are at particular risk as they don’t enjoy quite the level of economic benefits as other places.