I remember watching Chris Martenson videos from a long time ago. Anyone into independent libertarian commentary has probably run into his videos on YouTube at some point. A long long time ago I recall watching some of his stuff on peak oil.
Anyway, as @OneOneSeven shared here, he's started (as most of us have) with the assumption that the July 13th shooting might not be getting told straight. FWIW I'm not sure it is, but I'm also not sure it isn't. In this video he's focusing on the audio from the event which is probably where we'll find the most compelling evidence for an alternative take on the events. Even CNN has reported on forensic analysis showing as many three weapons were fired:
Forensic analysis suggests that as many as three weapons were fired at the rally (including, apparently, those fired as part of the response by law enforcement officials). The first three shots were consistent with alleged weapon A, the next five were consistent with alleged weapon B, and the final “acoustic impulse” was emitted by a possible weapon C, per audio analysis by Catalin Grigoras, director of the National Center for Media Forensics at the University of Colorado in Denver, and Cole Whitecotton, Senior Professional Research Associate at the same institution.
Being the ~conspiracy territory, I don't have to tell you take your grain of salt. Presuming only one weapon was fired by law enforcement, that leaves another shooter aside from the lone gunman, Crooks. The shots do have very distinct sounds, especially when you spend a lot of time listening to them. Fun video and I'm looking forward to the rest of his series.