The parking is at the foot of the building.
The lines are painted yellow — the colour for reserved parking.
There are spots with steel obstacles. Others are marked PRIVATE in big white letters.
I tell the driver they are parked in my spot. They looked surprised. I point out the painted message. They excuse themselves for not having seen it. I pretend to believe them (once I forgot to pretend and a few weeks later my car had key scars).
I go to the local home improvement store and spend ten euros. Now, instead of getting aggravated every time there is a squatter, I am aggravated because I shouldn’t need a traffic cone to make sure I can use my parking spot.
I rant about it here, the aggravation passes.