This is literally what he sent me:
You're offspring will reap the demise off your ignorance, be it slavery or another form of retribution. You're unwillingness to acknowledge injustice will bring the wrath of vengeful and irrational beings, seeking reparations in blood. I sought to enlighten you to a reality you were not privy to through the stories of people who lived those hardships. Those "criminals", as you call them, will come to eternally rob you and your next of kin of light... I wish the best for you.
Really fucked up stuff, this was a good friend of mine. What happened to people?
It's been noted that "recent converts" to a religion (or cult) tend to be sometimes the most vocal , the most stringent and the most zealous (to a point when even longtime practitioners are like "WTF ???") .
Some have already talked here about "intersectionality" or "neo-Marxism" to use another term for it . It's a secular project , but it has many of the markers of a religion or a cult .
If your friend is a recent "convert" he may very well act like he's seen the fucking "light" and like I said before -- some react to recent religious conversion with zealous enthusiasm .
Others here have said "fuck'em" . I think you may get your friend back in time (maybe) . But that time won't be any time soon . Use your own judgement when / if that time comes , if you want them back in your life or not . Marxist ideologies tend to not end well .