First off, you again frame this entirely around "expanding the coalition" to include the perpetrators while ignoring how it excuses (practically speaking) their victims. This is pure chauvanism, it's failing to recognize both the inherent humanity of the victims of imperialism, and their ability to contribute to a cause. I'd rather come across as a "preachy weirdo" to war profiteers than as an imperialist to the victims. When you describe this as "anyone who doesn’t share [your] exact lifestyle and worldview" you are minimizing what's going on and trying to make it a subjective issue when it's not. That makes it clear that you don't actually share any kind of moral outrage at them, that you don't share my goals at all, and you're just trying to pretend that it's an issue of "tactics" because you don't want to openly voice what you actually think.

Second, this babying, whitewashing shit doesn't really work to achieve anything. At best, you might get them to vote for a more polite warmongerer, while continuing to do real, tangible harm on a daily basis - but most likely it won't even do that. The way to change people's minds is not through that kind of nonsense, it is by confronting them and bringing the conflict directly into the open. This is exactly what MLK said:

Nonviolent direct action seeks to create such a crisis and foster such a tension that a community which has constantly refused to negotiate is forced to confront the issue. It seeks so to dramatize the issue that it can no longer be ignored. My citing the creation of tension as part of the work of the nonviolent resister may sound rather shocking. But I must confess that I am not afraid of the word "tension." I have earnestly opposed violent tension, but there is a type of constructive, nonviolent tension which is necessary for growth. Just as Socrates felt that it was necessary to create a tension in the mind so that individuals could rise from the bondage of myths and half truths to the unfettered realm of creative analysis and objective appraisal, so must we see the need for nonviolent gadflies to create the kind of tension in society that will help men rise from the dark depths of prejudice and racism to the majestic heights of understanding and brotherhood. The purpose of our direct action program is to create a situation so crisis packed that it will inevitably open the door to negotiation.

Your passive, whitewashing, can't we all just get along approach is counterproductive and flies in the face of creating the necessary tension required to change people's behavior. Which again, I don't think you mind, because you're not actually opposed to what they're doing.