Originally Posted by
Red Fel
there are effects, such as the Helm of Opposite Alignment and Sanctify the Wicked, which alter your alignment and are not inherently Evil. (In fact, StW is explicitly and extremely Good by definition.) So we know that, in essence, brainwashing is at worst a Neutrally-charged act. Free will is not a Good value, is the point.
The question is the nature of the "atrocities" you mention. Altering someone's brain directly is not Evil. Torturing them, on the other hand, is. Slavery or forced labor is. All sorts of uses of force could be considered Evil.