“If several editors collaborate to block or stonewall an article, they can stall well-sourced information or just entirely skew the presentation.”
You can see little better examples of that than in articles about evolution, Intelligent Design and Creationism. There is a tiny group of liberal editors who pretty much control everything on those articles. At least two of them are also administrators (who have the ability to lock articles and block users). In fact, Wikipedia has various “projects” that groups of editors sign up for in order to maintain groups of similar articles. For the Intelligent Design project, a large number of the editors are anti-ID evolutionists and their influence on the ID articles shows.
http://en.wikipedia.org/wiki/Wikipedia:WikiProject_intelligent_design
http://en.wikipedia.org/wiki/Wikipedia:WikiProject_intelligent_design#Participants
