When you talk about those who cannot afford a private residence I can only assume you mean people who live on the streets. Surely such people should, if anything, be glad of some kind of surveillance?
How does being monitored in any way inhibit your freedom? Oh and NO, public surveillance IS NOT a privilege, when you step onto a public street it’s absurd to expect that you will not be under scrutiny of any kind, whether that’s from a camera or a passerby. How can you possibly expect privacy in a public place?