This post is also available in: English Italiano (Italian) Deutsch (German) فارسی (Persian) Português (Portuguese (Brazil)) Русский (Russian)
Short answer
Just one example of how Al Jazeera published the fake account of a Palestinian Arab woman falsely claiming that IDF soldiers assaulted Palestinian Arab Women, without checking if the story is true. When the story turned out to be false, instead of publishing a retraction, Al Jazeera simply deleted all reference to the story.