The thread starter is an absolute moron. Teenagers and schoolkids scratch and vandalize far more car boots and windows than cats.
Spastic dog owners who let their dogs shit on the grass patches and at the road kerbs without using a plastic bag to scoop up the mess contribute far more to pollution than cats. Cats always bury their waste, and that includes urine. Only dogs don't. Get your facts rights. When living in a dense urban area cats never use waste to mark territory. Only dogs do.
As for cats stealing food look at your own family members first. Most of the food you leave on the table are not palatable to cats, especially feral cats. Unless of course you leave tuna fish wide open on your front porch. Cats are afraid to jump into houses because they are enclosed environment that contain smells and sights not familiar to them. Unless of course you leave your front gate wide open all the time which makes all animals, both cats and dogs, think your house is open to visitors.
Moron.