I once pulled into the supermarket late one evening to grab a newspaper from the kiosk. There was a handful of cars in the car park, one in the P&C spaces. I parked in a P&C space (so shoot me), nipped in, got the paper and toddled back to the car. The woman who was already parked in one of the many empty P&C spaces was loading her shopping into her boot while holding her baby.
When she saw me, she shrieked at the top of her voice such that I thought she had hurt herself or the child. No, she was shrieking at me for parking in the P&C space. I said nothing and made to get into the car. At which point she screamed "Somebody, somebody, STOP THIS WOMAN!".
Nobody came, because there wasn't anybody to come. That didn't stop her shrieking. I got in the car and drove away.
P&C parking is a very emotive issue it seems.