But obnoxiously failing to either disperse or sit down when requested to do so in this kind of circumstance is just plain stupid
Wow, how can "failing to sit down when requested" be obnoxious. I wouldn't sit on the ground either if I didn't want to. Once again, they are public servants, if a member of the public doesn't want to lie in the dirt I don't understand why their servant should be ordering them to do so, when they are not under detention or arrest, and appear to be committing no crime.