Kate is a canadian from British columbia and she's an on-the-run fugitive. (Aka murderer)
Ethan is a canadian from Ontario and he's...well, quite insane. (And perhaps another murderer that tried to kill Charlie.)
Danielle Rousseau speaks french. So she could technically be a Canadian born in Québec that speaks french. (Oh, and she just happened to have killed everybody that was with her on the island, which also makes her a murderer.)

Mr.Fury...what have the Canadians done? Does any of the writer has a teeth against them?

Does this means if you're Canadian and you happens to end up on this island, you'll end up being eeeevil? (Or you automatically are because murderer canadians automatically end up on this island, anyway?)

Thank you very much! :)

Weel, yeah. What's more evil than a Canadian, I ask you.