It's really not a big deal, and I don't understand why it should be. He had a moment of anger (very valid) and what I assume was an immediate, unthinking violent reaction (also understandable but it might have scared some people around, which is not as cool), else the bird would've just flown away. I feel bad for the kids watching it, but more so for the dude who just wanted to eat chips in peace. A bird is a bird, and he's not going around exterminating all birds in existence. Use your heart to give homeless people money, to raise abandoned kids and to stop imperialism and genocide.