In fact, the arguments are easily done away with, but it means being politically incorrect to a great extreme.
I have easily sorted out huge numbers of SJWs across the web by simply beginning every conversation by attacking the “myth of black victimization,” with a strong focus on black crime, and how it compares to Hispanic crime, Asian crime, etc etc., and also the extreme levels of black on white crime, and how all of this is out of proportion with their population numbers by an extreme degree. Emphasis should be made on explicit examples, such as grannies getting gang raped by gangs, or people being burned alive. These are objective facts which they can’t deny.
In their attempts to explain them, the SJW can take you for a wild ride. I had one a few weeks ago essentially make the point that the reason why blacks have such an extreme crime rate, score low on school tests, and in general are utterly dysfunctional, but Hispanics and other non-whites are not, despite all living in an oppressive anti-minority system, is because they’ve been oppressed so badly since the days of slavery that dysfunction is practically transmitted in the genes!
The real key to defeating them is basically moving to a point psychologically where you don’t care how they freak out or call you racist. You ignore the statements and obscene, even violent behavior, and when you force them to deal with the facts outside of their abstract theories, you win the argument and gain support from normal people.
I always point out that black community health measurements, as measured by the government, were nearly on par with whites until about 1960. I also point out that the freed slaves and their children built vibrant communities and institutions, largely by their own hand.
At this point, pretty much all arguments with these folks are futile.
It would be like arguing with the Brownshirts.