Click here to access article by the editor of Media Lens, a British website.
I have occasionally noticed this phenomenon which I suspect is an organized campaign to discredit activist bloggers and writers who are in political opposition to the policies and actions of the US-led Empire and to otherwise distort the information provided by Wikipedia. For example, see this post from Clarity of Signal regarding the Wikipedia entry on the White Helmets.
Also, you might be interested in an article entitled "Time to ditch Wikipedia?" regarding this obviously subversive Wikipedia editor or organization that posts edits of Wikipedia under the name of "Philip Cross".