Systemic Racism

Why do all the cases involving "systemic racism" never quite hold up to actual scrutiny? I mean, it would be nice for those who believe in it to have more of a slam dunk example, don't you think? Rittenhouse case to a rational person pretty much reads as self defense. Jussie Smollett case was absurd from the get-go. Chauvin was convicted. Oddly, the best case they've got is Kaepernick, but that one only really meets the systemic racism case if you know nothing about football or Kap himself. Plus, a bit hard to argue the NFL is systemically racist when the majority of players are African American and there are tons of black coaches and successful QBs other than Kap? The arguments just don't hold up.