while 90% of this is really bad to everyone(privacy, oppression,etc), I see there is a small bright side , that the criminals can now be caught so quickly these days there from some news I read.

the videos are all connected and facials are recognized quickly(a few seconds for millions of faces), they tracked down criminals(and their cars) who was on the run for thousands of miles all the way, in less than 24 hours sometimes. I think the whole project was called something like "peaceful city project".

in US, where surveillance cameras are scarce to find in most public areas, you need eye witness all the time, many cases take years to resolve, if at all.