Some theists in evolutionary science acquiesce to these tacit rules and retain a personal faith while accepting a thoroughly naturalistic picture of physical reality.
In a way, a certain amount of self-criticism is a good thing, because it keeps you humble. Realizing that no matter what success you've achieved, you can still make enemies makes you humble, too.
Moral justification is a powerful disengagement mechanism. Destructive conduct is made personally and socially acceptable by portraying it in the service of moral ends. This is why most appeals against violent means usually fall on deaf ears.

