Agreed that last sentence wasn't helpful, but neither are the downvotes for him explaining
exactly what the situation likely was.
Maybe the OP is a great cyclist. Maybe he's not. It's immaterial.
What is material is trying to provide some context into why that happened, if it did. Lets just say as a fellow Chicago resident I also immediately had the same suspicions that you were responding to.
I used to commute daily as a cyclist, until I moved here. I sold my bike, as I don't want to be associated with these people whatsoever. They are the most entitled, aggressive, and actively dangerous group of commuters I've witnessed. I've lived in Amsterdam. This is not how bikers should behave.
So to me, it was simply providing context to those who don't live here for stories that don't make any logical sense. Cyclists here get absolutely zero benefit of the doubt from me, and I imagine that attitude can get into a cop on a bad day as well. Certainly doesn't justify it, but it explains it.