the French have traditionally been allowed 25cl of wine or a small beer with their main meal of the day.Bon Appetit. (Or maybe that should be Bonne Chance.)
It was normally served on an official tray and sometimes eaten in full view of the public, often outside riot-control vans.
I just have a hard time picturing a riot-control cop, taking time out of his day to set up lunch next to the van, and have a glass of wine. I mean, if they are out in the van, and not back at the barn, doesn't that imply there is a "situation?"