So you have to be evil to think of what evil can do by the statement you made. Can't you see how this leads to a catch-22 situation where if you get rid of anyone that can think of possible evil acts makes your organization blind and therefor at higher risk of actually committing those acts.

Also, when looking at the people we all vote into power, there is a incredible amount of naivety here. Snowden should have keyed you in on what people in power are doing.