I'm telling you, it's the whole entitlement era and these millenials. They don't respect property, and they are much more prone to antics than earlier generations. Many treat their school and their teachers as "My parents pay taxes, so I own this school and I employ these teachers. So they better give me what I'm entitled to, and otherwise - BACK OFF." Everything is ME ME ME, My Facebook, my phone, my rights, my stuff - no respect for other people's stuff.
And so the pranks become bigger and wilder, and someone gets hurt, and property gets destroyed, and they don't care.
They might even hope to get a reality show out of it......