More from the annals of selective attention and confirmation bias, now in the journal Psychological Science.
The umbrella phenomenon is the Frequency Illusion: if your attention is drawn to some phenomenon, it’s likely to appear to you to be very frequent, all around you. Then in the special case of the Out-Group Illusion, in which your attention is drawn to a phenomenon associated with a group you don’t belong to (which then appears to you to be characteristic of that group and especially frequent there). Now in the even more special case of what I’ll call the Threat Illusion, in which your attention is keenly drawn to a phenomenon associated with an out-group you perceive as being threatening to you (which then appears to be not only characteristic of that group but extraordinarily frequent there).
A Frequency Illusion cartoon (under the more colorful label of Baader-Meinhof Phenomenon, a name based on one example of the effect, the sudden omnipresence of the Baader-Meinhof Gang’s name):
