In case you missed it, the legal practices in the US depend on previous court cases.
> U.S. corporations should not enjoy immunity for their purposeful assistance, technological or otherwise, in gross human rights violations (https://www.eff.org/deeplinks/2015/02/eff-files-amicus-brief...)
A positive ruling on this case, which presents to the courts not only a racist and violent but also a clearly stigmatized political system, would affect greatly how courts would behave towards companies collaborating with similar governments in the present time.
Furthermore, are you kidding me? IBM should be absolved of responsibility for aiding and abating severe human rights violations? Stop giving money to ACLU too, then. https://www.aclu.org/blog/racial-justice-human-rights/mandel...