Perhaps, but it seems that once safer communities with low or no tolerance for crime, regardless of ethnic and racial breakdown, flip to some, than most, than full (modern) Democrat control, like dominos falling the crime tolerance/acceptance rises then murders are woven into fabric of society.
More research needed and better run-on-sentence control as well ;)
Also the absence of ten, short, easy rules for family, community and national happiness contributed to this rot.
Rules (authoritative guidance) so simple that children used to be able to recite them. If acknowledged and practiced mostly guarantee safer, healthier, happier, and Just living.
Then/than control as well.