I am playing devil's advocate here, but mass surveillance can also save you.
Let's say your just broke up with your girlfriend, shortly after, her house get burgled and a bunch of jewelry is stolen, including some you gave her when you were together. A surveillance camera catches the burglar, a drug addict with a criminal record, he gets caught, tried and sentenced to 2 years in prison. The kind of case that won't get a news article, you may not even be aware of what happened.
Without the surveillance camera, you would be a prime suspect, and even if you don't get convicted in the end, there is a good chance for the police to give you a hard time.
Here is the asymmetry, if a surveillance camera prevents a wrongful arrest, no one will notice, because you don't notice things that don't happen. Only wrongful arrests caused by surveillance cameras will be noticed.
More surveillance doesn't mean more arrests, trials and convictions. These are limited by the availability of police forces, magistrates and jails respectively. Even with a total surveillance zero privacy dystopia, you can't have more arrests without the means to do so. What will change is on what grounds the arrests are made: video footage, a witness testimony, etc...
It doesn't mean I support mass surveillance (I told you I was going to play devil's advocate), but that alone doesn't mean more wrongful arrests as a whole unless something else in the system is promoting wrongful arrests.
There are legitimate concerns about Flock that don't involve wrongful arrests, such as misuse of data by operators, like for stalking, data security, which may leak to criminals, and usage for purpose other than law enforcement, like marketing. The fact that it is a private company funded by public money with dubious contracts is another concern.