Privacy isn't exactly a black and white thing. You have no expectation of privacy if you're in a public street, so being filmed isn't the worst thing in the world. If you're filmed in your own home, perhaps through your webcam, then that's a different story.
If the CCTV cameras weren't connected to the internet and their recordings were periodically deleted, this wouldn't be a problem at all. Even Richard Stallman has said as much.
What however is happening more and more, is that recorded data is kept indefinitely and is networked.
Have you heard what Binney has said what the software he wrote for the NSA does?
There are various domains from where it gathers data (cellphone, banking, social media, gps etc.). These domains are graphed and mapped in such a way that they can pull out all the attributes any individual has from any any or all of the domains.
