Final answer:
Holmes and Holmes have posited that the least number of mass killers belong in a group that the media excessively highlights, despite their rarity. The focus on such events skews public perception of their frequency and diverts attention from other critical societal issues.
Step-by-step explanation:
The question refers to the group of mass killers that, according to Holmes and Holmes, are the least prevalent. While the media often highlights mass killings and mass shooters, Holmes and Holmes suggest that these incidents are rarer than perceived. This discrepancy is compounded by the media's tendency to focus intensively on such events when they occur, creating an overestimation of their frequency in the minds of the public. Media coverage exacerbates fears and can lead to a distorted perception of the risk of violent crime, as observed in the aftermath of tragedies such as Columbine, Sandy Hook, and others. Furthermore, this focus often overshadows other significant issues like poverty, poor education, and environmental hazards that also affect disadvantaged groups.