Ben-Gvir did not offer proof of his claims and appeared to have bunched together a number of issues with unclear relations between them.
Israel needs reform to balance legal oversight with democratic accountability, not politically driven purges. Now is the time for responsibility, not another showdown between branches of government.
The "challenging situation" in which the Jewish State has found itself has compelled the Attorney-General to effectuate her role as gatekeeper, the letter noted.
Protests originally broke out last week after Netanyahu announced his intention to advance the firing of Shin Bet head Ronen Bar.
Baharav-Miara was absent from the meeting and accused the government of attempting to place itself above the law.
Several former supreme court judges, including Aharon Barak, have signed a petition calling on the government to stop the firing of Attorney-General Gali Baharav-Miara and Shin Bet head Ronen Bar.
A-G stressed that the government is prohibited from making any decisions or taking any actions regarding the conclusion of the tenure of the head of the Shin Bet.
Bar will end his role on April 10 or when a new Shin Bet chief is appointed - whichever comes first.
The Knesset is set to approve Minister Itamar Ben-Gvir’s reappointment despite legal challenges.
"A black flag of illegitimacy flies over [this decision]," read a joint call to protest from the organizations.