Brian Michael Jenkins, a senior adviser to the president of the RAND Corporation who was present at the U.S. House Homeland Security Committee hearing on February 4 mentioned in this WaterISAC post, comments on the variety of challenges of shutting down domestic extremists, who he notes comprise those from both the far-right and far-left. Specifically, he examines how domestic extremists are different from a homegrown jihadists and how the U.S.’s approaches for dealing with the latter group won’t be as effective when combating the form, making the situation more difficult to address. He submits that domestic extremists have a larger constituency with a more sympathetic base, are better organized and armed, and in many cases have military or police training. Additionally, some of the strategies and tactics used for combating homegrown jihadists might not work, such as preventing radicalization, collecting intelligence, prosecuting suspects, and engaging in co-option strategies. Read the commentary at RAND.