“The tools of conquest do not necessarily come with bombs and explosives and fallout. There are weapons that are simply thoughts, attitudes, prejudices, to be found only in the minds of men. For the record, prejudices can kill, and suspicion can destroy. And a thoughtless, frightened search for a scapegoat has a fallout all of its own.”

-Rod Serling

I found that on wikiquote, and felt it was very apt.