I think you should just file it under somewhat less suspicious things like ...
- There's a first time for everything.
- New guy on the job wanting to show that no infraction of the law is too small to ignore.
- Cop just having a bad day and had to take it out on someone.
- Or maybe just... you broke the law and the law won! So far, at least till you cop a guilty plea and pay or go to court before a judge.
Don't read too much into the conspiracy theory you are suggesting.