Unbelievable. We in the 100s, behind 3rd base, could see a swarm of something, but we thought it was just gnats, mosquitoes, or some other kind of insect. It's not unusual to see such swarms pass through, but it usually happens much later in the season, like July or August.
That's appalling that someone could take that many bees into a stadium. The prank could have caused injury from people fleeing, or even death, if someone allergic had been stung.
I hope the culprit is prosecuted. There should be no tolerance for endangering people that way in a public venue.