[whakim]

Regardless of whether you think it's a "weak link", this isn't a logical proof where you can disprove one statement rendering the entire proof invalid. Rather, you have to disprove each piece of evidence for systemic racism in order to disprove it exists.

Your argument is mostly "whataboutism" - you point out that terrible things have happened to groups of people in the past and those things have inter-generational effects. Of course it's true.

That being said, of course it's a matter of degree, but at that point you're just arguing semantics. Driving your car at 25mph vs 125mph is only a difference of degree, and yet one is totally permissible and the other is incredibly dangerous and would land you with a big fine. The key point here is that speeding becomes increasingly more dangerous as you drive faster, to the point that exceeding speed limits by a given amount becomes reckless driving because you're much more likely to cause injury and/or death to yourself and others. In the same way, racist systems create a compounding disadvantage that is almost impossible to rectify simply by changing the laws to make them "colorblind" in the modern day.

[unishark]

I'd call it reductio ad absurdum personally, an application of your logic elsewhere to reach absurd conclusions. And the existence of inter-generational effects are the undisputed facts I started with, not the conclusions reached via your logic, which are that the existence of these effects support the charge of systemic war/famine/etc. Whether it's just semantics depends on what you think the supposed existence of these "systemic evils" requires morally.

[whakim]

Not really. You've said that because the difference between the intergenerational harm caused by "other crappy things" and 400 years' worth of racism is only quantitative, the intergenerational effects of "other crappy things" ought to be considered systemic. Your logic implies that because driving your car at 5mph and 100mph is only a quantitative difference, driving at 5mph ought to be considered "speeding." Or because the difference between heating cold water 1 degree and 100 degrees is only quantitative, cold water heated 1 degree ought to be considered "steam." Quantitative differences eventually become qualitative differences; that much should be trivially obvious.

[unishark]

Ah I missed that little gem. So genocide would be the safe slow driving extreme in this analogy?