Malcolm X is someone I look up to more than any civil rights leader. I studied the man extensively. It matters to me. He died because he told the truth about the Nation Of Islam and the Government. To ignore that just because Farakhan has a smile and some real words is a disservice to Malcolm. That's like a person that loved Pac being cool with Puff now that he has money and power. Its easy to say fukk what Puff had done to Pac, Puff got money and is winning. If you're a righteous person you can't escape the truth and you damn sure can't co-sign those that had the truth murdered.
I don't know whether Farrakhan had anything directly to do with Malcolm's murder as it's all essentially one person's word against the other. Still at the very least I think he's complicit in that he contributed to an environment within the NOI that was hostile to Malcolm. An environment that had it's fair share of cons, ex-cons, murderers, thugs, etc.. Farrakhan and several other influential NOI speakers were denouncing Malcolm in a manner tantamount to giving the okay for his murder. In that regard they were grossly irresponsible.
An argument can also be made that Malcolm contributed to that same hostile environment when he continued speaking out against Elijah Muhammad and the NOI. What he was speaking was truth, as that old man was a womanizer, deadbeat dad, and a religious opportunist who put his own designs on Islam for personal gain. Still, in consideration of the criminal element who viewed Elijah Muhammad as their spiritual father, Malcolm probably should have toned his rhetoric towards the NOI down. That's especially so after coming back home after being abroad in Africa as things were settling down. He should have continued with his own affairs and with the endorsements coming in from outside the country in the form of traditional Muslims, there was no need to keep speaking on the NOI and their leader as he did. Had he done so, and remained alive, Islam as practiced by Black Americans today could be markedly different. To that same point, I wonder if the current state of affairs with the US and the Middle East could have been different too in some regards. We'll never know.