Leeroy, you need to go back and read what you quoted again. The 4th Amendment guarantees you reasonable sovereignty in your HOME. It does not guarantee you those things in public. Our forefathers knew what they were doing, you're just distorting what they endeavored to provide.
And so what if these "big brother cameras" become used for catching people who litter or commit other petty crimes. A crime is a crime is a crime, right? The same complaint could be lodged against traffic cameras that might catch you running a red-light during the darkest hours of the night when no other souls were around. You still ran a red-light, so you still deserved to get caught.
I see a lot of people bellyaching about what-if scenarios, and some of these scenarios involve doing something wrong in the first place. It seems there's an easy solution here. Don't do anything illegal.