Ideological bias on Wikipedia
Ideological bias on Wikipedia has been the subject of both academic analysis and public discussion. The English Wikipedia has an internal policy which states that articles must be written from a neutral point of view, which has the goal of representing fairly, proportionately, and without bias, the significant points of view that have been verifiably published by reliable sources on a topic.
Source: Wikipedia — Ideological bias on Wikipedia (CC BY-SA 4.0)