Yes it was being mean. This was why I grew up - and at age 50 - still get anxious around snowball fights. Invariably one person ends up getting picked on resulting in face washes and snow down the coat. It is cruel and I have difficult memories of always being that individual.

I'm not saying it is right or excusable. What I am saying is that unfairness and bullying come part and parcel with such an activity. It is no different than a game of murder ball.