A summary list of "left gatekeeping" media. These consist of left/alternative/progressive, even radical journalists and publications, investigators, and researchers who censor, or in worst cases, ridicule/smear those, including family members, who question the official conspiracy theory behind the 9/11 attack, in effect teaming up with mainstream media to silence dissent. A few, however, seem to be developing hairline fractures within the wall of silence as the 9/11 truth movement continues to go global. Let's hope it continues. Feel free to add any I may have missed.