I make no such assumption. Rather, I start from the assumption that in many scenarios, they cannot be reasoned with in any useful capacity. However, to assume that the treatment of any organization, which is necessarily comprised of individuals operating within a structure, should be completely black and white is a foolish approach. Likewise, unilateral action of any kind taken in support of or against any such organization without understanding the precise workings of the body in question is likely to be judged by history as foolish at best, suboptimal in the middle ground, and disastrous at worst.
In short, this video sums it up.