Near where I live is a residential street with a small rank of shops.
Opposite the shops is a long parking bay (enough for about 8 cars), and some houses, set back from the road. I'm pretty sure the bay exists to service the shops.
One of the houses has created a drive / parking space for their car, in front of their house. The car faces towards the pavement and parking bay, and they have to cross both to access the road. They have put up a load of (unofficial) no parking signs, and have effectively dropped the kerb themselves by putting some plastic wedges across.
Inevitably they keep getting blocked in because they are trying to prevent people from parking in the bay in front of their car, but it's a public parking bay! I'm sure they have no right to annex it to access their space.
When people park in front, the house/car owners get very abusive, shouting at drivers to move and threatening to clamp them. Surely they can't. They don't own the bay, and shouldn't be parking behind a kerb that hasn't been officially blocked anyway.
I've been tempted to risk parking in front of them myself, when it's the only bay available. But I'm worried they would key my car!
Who is being unreasonable?
YABU - these people gave a right to park near their home.
YANBU - you can't just annex part of a public parking bay as unofficial access to where you want to put your car