 Cartel members have broadcast executions on YouTube and on other video sharing sites or shock sites, since the footage is sometimes so graphic that YouTube will not host the video.The cartels have also hung banners on streets stating their demands and/or warnings.The 2008 Morelia grenade attacks took place on September 15, 2008, when two hand grenades were thrown onto a crowded plaza, killing ten people and injuring more than 100.