Systemic racism doesn’t mean white men in suits having secret meetings to decide how racism happens. The murder of Sam DuBose was clearly unpremeditated and spontaneous. It’s also clearly related to the overwhelming dehumanization of black people throughout American history, the normalization of immediately using violence to deal with them, police forces that are willing to cover for each other, and so on; snap decisions made with the weight of enough racist psychology behind them don’t demand conspiracy theories.