In these days of Perception Management who is to say what is actually true? Nobody should attack someone else for what they believe is actually true.

"Perception Management is a Propaganda technique that involves carefully altering the perceptions of a target audience to suit the objectives of the sponsor, and is an essential part of modern Information Warfare. The term originated within the U.S. Military as part of their Psyops program, describing how selective information is provided (or denied) to a target audience to influence their emotions, motives and objective reasoning in order to promote a change in behaviour that is favourable to the sponsor.

According to one author, Deception and Disinformation are important ingredients of Perception Management; getting the target audience to believe whatever the sponsor wants them to believe regardless of the truth or validity of the information being promoted. As specified by the U.S. Department of Defense, Perception Management combines truth projection, operations security, cover and deception, and psychological operations".