I'd much rather an almost unbiased and passive camera making the decision rather than a likely racist, and certainly biased in other ways, cops enforcing the law. Certainly considering I would rather cops doing more important work than handing out tickets. Maybe even spending that time getting training to be less fuckwits.

If you said they should be put in cars, I would agree that is watching it very driver 24/7, but strategically placed cameras in dangerous areas seems like a good idea to me and certainly not watching everyone all the time.