Here's the thing. I totally get playing a joke. The grass seeding is funny. In high school, we had a group of us who made it a point to do some kind of practical joke to our rival schools on game week. Chained and padlocked the doors to Lee H.S. shut. Put syrup and feathers on the General Lee statue. On Lanier week, we skipped school and drove over to Lanier to run across the big front lawn and raise a Jeff Davis flag up the pole. Hell, we had a toilet hoisted up ours. had three Lee football players go streaking down our halls on game day. Got caught, too. Mildly funny but overall, harmless shit.
This, on the other hand, is asking for a riot. You know good and well it wouldn't matter if you got a court order allowing you to do it with police protection. Someone is going to get hurt, bad.