The flip side of this, is that police used to "solve" a much higher percentage of murders back before DNA evidence. Because they would just grab any Black person and blame the crime on them.
The introduction of DNA evidence, is used by the Innocence Project, to overturn a bunch of false convictions. Most of those false convictions, involve Black people.
https://innocenceproject.org/dna-exonerations-in-the-united-states/