They are not "taking down CCTV", they're destroying the infrastructure that lowers car fumes pollution. These cameras are not used for anything else.

You know, that thing killing school children: https://www.lbc.co.uk/article/air-pollution-ella-kissi-debra...

The evidence for ULEZ is solid so seriously bringing it as an example of white knight activity whole they're at best malignant, brainwashed goons doesn't help anyone: https://www.bbc.co.uk/news/uk-england-london-67653609