I suppose the implication could be that the set petty crimes and code violations, which includes many things, among which are parking violations and music piracy (two things that vary dramatically between demographics), has an equal distribution between all demographics.

If parking violations are an old demographic problem, and music piracy are a young demographic problem for example (even though it is assumed that more things are in the set than just these two) then it could be that they roughly cancel each other out.

I guess one would really need to know what the full set petty crimes and code violations consists of to be sure.

See NYC's recent law changes to legalize jaywalking. I won't pull up the exact citations but there were evenly distributed tendencies to jaywalk yet something like 80-90% of police engagements were with PoC

I am not disputing that, the comment I replied to assumed that offenses were not evenly distributed because two of the examples in the set of petty crimes was not evenly distributed offenses by demographic.

Note that this is commission of offense as opposed to say police activity around offense, which is a different thing, as you note with your jaywalking example.