Throwing a creamfilled pastry on a bus' windshield at a busy intersection is just dangerous - a distracted driver could lose control of the vehicle and people could be injured or die.
And big deal if police "cautioned" a man who was going to throw an egg.
Any cop would tell a would-be vandal: "I wouldn't toss that egg if I were you."
Good point...but just how many cops would actually write up a report about warning someone not to throw an egg...worse, how many cops would write such a report claiming to know what the "perp's" intent was?