Interesting that WP decided now to publicly notice that hate hoaxes exist. On other matters - the technique the interviewer uses here is a great example of "talking past the sale" "You did it b/c blah" "Non-committal" "Where'd you get the paint?" "Hardware store downtown"https://twitter.com/washingtonpost/status/1202622488108249089 …
Good general advice but it's usually meant in the spirit of "how to avoid making a false confession". In this case the guy was semi-tricked into making a true confession.