There is no such "okupas problem" in Spain. If someone enter your dwelling (don't really know if is the correct term in English. In Spanish the house where you actually live is called "morada"), you can call the police and they will evict whoever is in the house in less than 24 hours. Other topic is holiday residences; those are not dwelling ("morada") so, in Spain, the right to have a dwelling is on the top of priva…
So, there is an 'okupas problem'. You could have saved the whole first paragraph.