Wikipedia effectively blacklists ALL Right-Leaning Media, Including One America News Network: 

A new study by Media Research Center Free Speech America found that Wikipedia, the encyclopedia behemoth, has effectively blacklisted all right-leaning media from being used as source material, exclusively relying on leftist, legacy media notoriously known to spread misinformation and attack opponents of the left.

Positioning themselves as arbiters of truth, Wikipedia and its editors have effectively institutionalized a blacklisting system utilizing a “Reliable sources/Perennial sources” page that forbids the use of some of the most popular media sources on the right when editing Wikipedia pages.

The determinations occur on a separate page dubbed “Reliable sources/Noticeboard.” Once a conclusion is reached, each outlet is given a label—either “generally reliable,” “no consensus,” “generally unreliable,” “deprecated” or “blacklisted.” 

“Blacklisted” sources are considered spam and are “automatically” blocked from being cited by any source. These sources are thrown under a “spam blacklist” or in the “Wikimedia global spam blacklist.”

“Deprecated” sources, similar to those media sources included under blacklisted, are “generally prohibited,” with users who cite them being issued a “warning message” and their entries “tagged.” 

“Generally unreliable” sources are not far different from those included under blacklisted and deprecated. Wikipedia claims such sources “should normally not be used.” Users are urged to find a “more reliable source instead.” 

One America News Network, which AllSides media labels as "right," was ruled to be "Deprecated" according to the Wikipedia sources list, and its content flagged as a result.

The information found here was excerpted from the full study, found here.