The quick summary: It's a load of bollocks.
There was one peaceful political demo in Palma (of course, the Mail 🤡 reported that "ARMED police in STAB VESTS looked on", yeah, because Spanish police wear stab vests and carry guns every day), calling on the local government to build more affordable housing, and to prevent so many places being rented out on Airbnb (which is often illegal but there are not enough resources dedicated to enforcement). This was billed as something close to "Majorcans demand an END to tourism" in the media. As many have pointed out, this could have been in Amsterdam or Edinburgh or Reykjavik or any other city blighted by holiday lets of homes in ordinary residential areas.
Then during the week, a local politician from the Vox (fascist-apologist) party, talking about the volume of tourists, said "Well, Majorcan people shouldn't expect to be able to go to the beach in July/August any more". This annoyed some anti-fascist people, so they said "Let's occupy the beaches this coming Saturday" (specifically as an "up yours" to the fascist party). This was billed in the media as "Now Majorcans prepare to STORM the beaches to protest against tourists". 🙄 A total of 30 (thirty) people turned up. There were more journalists and camera crew than demonstrators.
And that's it. Meanwhile in the last week there have been reports of three or four incidents in which tourists themselves (German and British) were responsible for acts of drunken violence, but this has not been billed as "Northern European tourists STORM Majorca". Funny old world, eh.
So desperate has the Mail become to capitalise on "Majorca Meltdown Fever" that yesterday it ran a 20-photo piece about (checks notes) some blokes having a few beers at their hotel.