The name is from there: [0]

> The Baader–Meinhof phenomenon is the illusion where something that has recently come to one's attention suddenly seems to appear with improbable frequency shortly afterwards (...) It was named after an incidence of frequency illusion in which the Baader–Meinhof Group was mentioned.

[0]: https://en.wikipedia.org/wiki/List_of_cognitive_biases#Frequ...

You are two clicks away from the correct answer :) https://en.wikipedia.org/wiki/List_of_cognitive_biases#Frequ...