Re: Janeway's Decision to Kill Tuvix
The difference here is that the transporter accident created a new being. Who should have been afforded the same rights as any being in the Federation. How he came to be born is irrelevant. He had the same right to live as any other being, instead Janeway decided to murder him. If Tuvix had volunteered to undergo the reversal process so be it. But he wasn't given a choice.
And from a legal point of view, Janeway was emotional invested in the outcomming hardly impartial. Yes you can argue mitigating circumstances.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.