Wikipedia is actually falling victim to the opposite: ideological tyranny imposed by a small cadre of editors.
Some Wikipedia articles now show noticeable bias (e.g. compare the "Men's Rights 'movement'" article to "Women's Rights"). On many pages, particularly gender related articles, there is a band of aggressive editors who will fight reasonable efforts to balance the tone of articles. Outside contributors who try to improve these pages will get dogpiled on. Unless you are an expert at wiki-lawyering, you won't survive even a couple edits before you are banned or restricted from editing. They enforce/investigate multiple accounts, VPN & proxy usage vigorously, so once you are out, you are effectively purged. If you are ambitious and make edits similar to what others have tried (often because all of them are trying to fix the same biased statement), expect to be accused of being a "sockpuppet" or of being a "meatpuppet." If that fails, you will be accused of "tendentious editing". Of course responding to these accusations takes extraordinary amounts of time -- which is the point. These tactics are used (very successfully) to reduce people's resolve to contribute or fix biased articles.
Wikipedia's ideological hijacking is a serious problem and arguably represents the biggest threat to Wikipedia's longterm legitimacy. Those engaging in ideological hijackings have (very rightly) realized that if they can define what is written about a movement on Wikipedia, they can control what society thinks about it.