Ah ok, that's an important piece of information for the conversation, which now hopefully affords the opportunity to better describe my belief system:
I don't believe there are "scales" of morality, even though that's not a mainstream view. There's no "this is a little bad" versus "this is a LOT bad" kind of "weighing the balance of good and evil in the scales, to see if you end up in the Good Place™ or the Bad Place™". I don't believe that; I believe that it's a simple boolean: if the "immorality is nonzero, it's immoral."
What does scale is the practical impact of actions. The earlier examples in this thread demonstrate that: thinking about murdering someone, to me, is just as immoral as actually murdering them. The consequences are very different: in one case, the person is still walking around and in the other they are dead. Same for fantasizing about various acts... big practical difference in just thinking about it versus acting on it. Killing one person versus "wipe them all out"/Palpatine has a vastly different impact in society.
So if we are arguing about the practical ramifications of behavior, I keep that as separate from the morality. Because you can be an immoral evil person and have really pleasant practical impact on the world, or you can "only ever have good thoughts" but have zero or even negative impact on the world, for example simply by eating, you are depriving some other organism of its life.
I think the justice system is often abused and blurs the lines between addressing actual impact (like you really did kill someone) versus moral assessment, and I agree that jailing people for "thought crimes" is not what the justice system should be doing.