The only correct answer. Idgaf about some sky rat, but I'd be a little shocked if someone snatched a seagull out of the sky near me and slammed it into a wall until it died.
I'd also not give a shit five minutes later and would probably regale my friends with the story of the seagull slammer.
Right, this is animal cruelty. There are people who find humane ways to deal with “pests” or “vermin”, so the fact that we have extermination practices for some population of animals doesn’t make this okay.
And those people aren't any more right... Seagulls are actually pretty interesting, long-living, and intelligent creatures. They simply can't compete with humans, that's all.