text:  Cynthia Miller Idris says she was shocked by the shooting on Saturday, but she was not a bit surprised. The only thing that surprised me is that we hadn't seen it sooner. Miller Idris is with American University's Polarization and Extremism Research and Innovation Lab. I thought that this was something that we were likely to see over the last year or two, given the conditions that lead to assassinations, political assassinations, and the fact that we've been seeing them among our allies.