1.Blowing a horn to be a nuisance is against the law, which is the case of the operator of the vehicle, not that I condone the behavior of the man throwing the punches, but I understand.
1. Since you have already mentioned "written rules" is there a written rule or law against blowing your horn in front of a church?
2.And perhaps it may interest you to now that all rules of the road apply to funeral processions. That is right they legally aren't allowed to run red lights and such.
2. In the State of NJ all vehicles in a funeral procession can proceed through a red light as long as the lead vehicle went through first.