In my city, mostly throwing glass bottles at vehicles and screaming.

Envisioning a "keep summer safe" approach…

It is not uncommon to see someone cut across the road and scream at people in cars or throw things.

Depending on the driver lots of different stuff happens. Some will drive around them, others get out and confront them etc.

I suspect an automated vehicle will just come to a stop an wait.

Worst case, add one more person armed with a crowbar and then we have the smash and grab thieves that seem to rampant in San Francisco with a very compliant automated driver stuck behind the accomplice just standing in front of the vehicle.