The "news" video is compelling, but is it real, is it recent, is it authentic?
Citizen's Evidence Lab from Amnesty International provides tools and instructions for establishing the veracity of "news" videos.
Read more: Amnesty International launches a new site to help journalists verify YouTube videos
As with many information sources not everything in Wikipedia is accurate, comprehensive, or unbiased. This article, by Wikipedia editors, describes ways to evaluate and use Wikipedia as a research tool, including an overview of its strengths and weaknesses, as well as ways to judge article quality. As they say in the summary, "You should not use Wikipedia by itself for primary research (unless you are writing a paper about Wikipedia.)"