The absolute truth is that areas with greater minority populations are policed more heavily
Neighborhoods with higher crime rates get policed more heavily in general.
In regard to Politesse's jaywalking example, a city neighborhood with a grid layout and heavier through traffic will see more traffic enforcement than a quiet suburban neighborhood with no significant through traffic because many streats end in cul-de-sacs. But Politesse wants to make it about race and ethnicity instead of traffic.
and minority people are arrested or ticketed at much higher rates than their white counterparts engaging in the same behavior in a whiter part of town.
Groups that commit more infractions/crimes per capita will be ticketed/arrested at higher rates. For example, blacks commit 5-6x more homicides per capita than whites. Why should you expect arrest rates to be the same?
My BIL has long been a substance abuser and back in the day, when police pulled him over for a DUI, they’d see a nice looking white kid with the address of my in-laws in a very nice very white neighborhood ..and let him go.
And you attribute these anecdotes to him (and you) being white? In any case, traffic laws, including DUIs, should be enforced, and the LA city council is wrong for making it harder for LAPD to enforce the law. This will hurt public safety for all Angelinos, but they only have themselves to blame for electing such idiots.
I snipped the rest of the anecdotes since they veered into accents and academia and had little to do with the question of why LA city council things that it is wrong for police to enforce traffic laws.