I agree that there is no privacy in public to a point. Its a different matter being recorded on the street than in a private business (i.e. bank). Of course government building also have security cameras (libraries, police stations, etc).
But you do realize that the government will eventually install cameras in most public places (and they have in many cities). Eventually this could and probably will lead to cameras on all residential streets. You may say that "I have nothing to hide so I don't care", but I personally don't want my every move to be monitored.
My only hope is that there just won't be enough manpower to monitor all of the data (until our AI programming gets better anyways).
On a positive note, during the Vancouver olympics hundreds of public security cameras were installed and monitored by police. After the games were finished, the police requested that the cameras be left in place, but the mayor refused (citing citizen privacy concerns) and the cameras were taken down. For once a politician actually cares more about the people than increasing government control.