a) both represent suggested information to tempt the ignorance of perceived differences (inspiration).

b) the parasitic few suggest "serial killers" to incite fear in individuals; while "mass shooters" are suggested to incite fear in individuals within collectives. The serial killer narrative singles out differences; while the mass shooter narrative targets sameness.

Like always...the parasitic few contradict both sides of reasoning to imbalance (want vs not want) the choice at the center of balance (need/want).