Al Jazeera claims this is direct retaliation for their 7 Oct documentary which is a very thorough analysis of some of the more extreme claims made by the IDF about what happened that day. Ironically, this documentary uses the Israeli government's own information as its initial primary source (including the official record of who died that day).

The documentary can be viewed in full on YouTube: https://www.youtube.com/watch?v=_0atzea-mPY