Depends what they mean by 'good'
Whatever they mean, it doesn't rule out total hypocrisy.
Apart from all the kidnappings,
"Stop following me or I'll kill one of them" - Ethan.
Charlie 'killed' - by Ethan.
Scott killed - by Ethan.
Nathan killed - by Goodwin, because otherwise he might have thrown suspiscion on Goodwin, but that's OK because Nathan wasn't a 'good' person'.
All the Tailies who died for lack of help - especially medical attention.
Whatever happened to the real Henry Gale?
Never mind kidnapping Walt - what about Michael, Sawyer and Jin left to die after their raft was blown up?
The fake Henry Gale trying to strangle Ana Lucia - after she saved his life (from Sayid).
In what way are the Others 'good'?
Seriously, how are they 'good'?
THE OWLS ARE NOT WHAT THEY SEEM