What was going on with Pluto?

[Ghoulish Delight]

You know, I usually assume in these cases that the kid did something to provoke the CM (like the latest Tigger one where it was clear the the kid was doing something that deserved a shove), but 1) while provocation might justify a shove, or even a slap-of-the-hand to get yourself out of immediate contact with a brat, I'm finding a hard time coming up with any reason that chasing a kid around Town Square as Pluto would be justified and 2) the prat-fall Pluto takes when the lady who stops him barely taps him on the shoulder doesn't do much to engender my sympathy for this masked CM.