Srijan Kumar, William L. Hamilton, Jure Leskovec, Dan Jurafsky:

1% of all communities initiate 74% of all conflicts on Reddit. The red nodes (communities) in this map initiate a large amount of conflict, and we can see that these conflict intiating nodes are rare and clustered together in certain social regions.

“Come look at all the brainwashed idiots in r/Documentaries
Seriously, none of those people are willing to even CONSIDER that our own country orchestrated the 9/11 attacks. They are all 100% certain the “turrists” were behind it all, and all of the smart people who argue it are getting downvoted to the depths of hell. Damn shame. Wish people would do their research. Here’s the link.”

The above post in reddit.com/r/conspiracy (now deleted) led to several members of r/conspiracy posting uncivil comments (starting a ‘raid’) on the linked post in reddit.com/r/Documentaries.

Therefore, in this research work (accepted and to be presented at World Wide Web conference, WWW 2018), we conduct a data driven analysis of how conflicts/raids occur between communities in Reddit, their impact, mitigation, and prediction.