You can aim this tactic at different parts of the structure of any dialogue. You can target the moral value of the process, the facilitators, or the actual topics under discussion. (hivelink)
You can also claim moral high ground by the hierarchy of the being whose needs your idea is supposedly addressing. Make sure this someone is very important and hard to attack, like children, or a god, or some abstract yet noble segment of society.
(hivelink)no youtube