A single blow of their tail can kill a man.

What does that have to do with either Keiko's death or the petition for Morgan's freedom?

I used to fancy these animals but then I learnt how savage they are in the wild. They're killing helpless dolphins and whale calves. I've lost my fondness of them. But I agree. They should be set free in the wild and should not be contained for the sake of people's amusement.

It's the way the world goes, you shouldn't not like an animal because of its diet. An orca eating a dolphin is no different than us humans eating beef, it's just how it is.