I think he refers to the fact that there's been (supreme)court cases about this that generally rule in the polices favour saying they're under no obligation to protect, etc.

And repeated examples of disregard for collateral damage and proportionality during enforcement like: https://www.independent.co.uk/news/world/americas/ups-driver...

Protocol changes are made like ones with regards to high speed chases but often only after a lot of hubris in which police and/or bystanders die