This is a quote from the book "The Gentleperson's Guide To Forum Spies" by Cryptome.org
...to stop them from their activities.

Technique #5 - 'ANGER TROLLING'

Statistically, there is always a percentage of the forum posters who are more inclined to violence.
In order to determine who these individuals are, it is a requirement to present a image to the forum to deliberately incite a strong psychological reaction. From this the most violent in the gro up can be effectively singled out for reverse IP location and possibly local enforcement tracking. To accomplish this only requires posting a link to a video depicting a local police officer mas...
read full book block explorer