They are black supremacist.
https://en.wikipedia.org/wiki/Nation_of_Islam
"Critics have described the organization as being black supremacist[4] and antisemitic.[5][6][7] The Southern Poverty Law Center tracks the NOI as a hate group.[8][9] Its official newspaper is The Final Call. In 2007, the core membership was estimated to be between 20,000 and 50,000.[1]"
i'm not a kook or an extremist.
look up their theology and creation mythology/eschatology -
the teaching is that all humans descend from 'the afro asiatic blackman', that whites are devils that are spawned by a science project, other races were failed attempts at this experiment (aka the 'blacker' you are, the more 'pure' you are), and that at the end times the prophet elijah will circle the earth in a UFO and and destroy the 'devils' (aka white devils) and the nonbelievers and save the believers.
Malcom X left NOI specifically when he undertook the Haaj and realized it had nothing to do with actual Islam, which, separate point, I also disagree with, but that's a separate topic, and at least it isn't a racist religion. This is likely (at least part of) why he was assassinated.
and yes, antisemitism fits in as a part of this belief system.
but to categorize the group as only 'antisemitic'
is to do a disservice to the general level of divisive, racist drivel that they promote against all humanity, including africans and african americans (by encouraging belief in this nonsense).
Facts.
but yes, facebook banning them is also just as silly. but if they are banning them, it should be for the wider racism, and not just one among many (antisemitism).
To quote:
"Farrakhan blames Jews for the slave trade, plantation slavery, Jim Crow, sharecropping and general black oppression. Farrakhan’s tone grew more belligerent in June 2010, when he sent letters to several leaders of the Jewish community as well as the Southern Poverty Law Center demanding that they acknowledge the evils they have perpetrated and that they work to further Farrakhan’s goals. The letter ended with a threat to “ruin and destroy your power and influence here and throughout the world” if his terms were not met."