Conversation so far:
Why did he start this?
cascades" of faulty information within groups that may ultimately lead to violence.
In this article they wrote, "The existence of both domestic and foreign conspiracy theories.
What year was this?
2008.
What is this in?
paper.
Who wrote it?
Sunstein co-authored a 2008 paper with Adrian Vermeule.

Question: What is the name of the paper?
Self-contained rewrite: What is the name of the paper Cass Sunstein co-authored with Adrian Vermeule?