(Matt Rourke | AP file photo) In this Aug. 2, 2018 photo, David Reinert holding a Q sign waits in line with others to enter a campaign rally with President Donald Trump in Wilkes-Barre, Pa. A far-right conspiracy theory forged in a dark corner of the internet is creeping into the mainstream political arena. It's called QAnon, and it centers on the baseless belief that President Donald Trump is waging a secret campaign against enemies in the “deep state.”