One definition says that:
Cognitive dissonance is a discomfort caused by holding conflicting cognitions (e.g., ideas, beliefs, values, emotional reactions) simultaneously. In a state of dissonance, people may feel surprise, dread, guilt, anger, or embarrassment.
There is a part of the most ardent person espousing these things that knows full well that they are wrong. Because they would not want such a thing to happen to themselves or their loved ones. They break through their wall of belief and it's hard for them to give it up and admit it.
OTOH, if we are talking about drooling, terminally insenstive maroons, who merely repeat what they are told by media, no, they don't feel any guilt. But they probably learned at an early age to not feel anything that would possibly subject them to more abuse.
They are broken and only a Road to Damascus moment would impact them. IOW, they would have to feel the pain of others and their shame and failure.
Probably not what you wanted to hear, but I'm just working my way through all of these things like many others do. 
Edit history
Recommendations
0 members have recommended this reply (displayed in chronological order):
= new reply since forum marked as read