Wikipedia is something of a propaganda circus. Anything related to prominent politicians or other public figures, or governmental activities, is heavily edited by anonymous persons, most like part of their 'media image management consultant teams' or whatever they're calling PR monkeys these days.
Generally the more obscure the topic, the more reliable the information, so there's that.
that's a bit overstated, it's fine to get started on a topic and about broken links, you do realize you can help fix them as well right