Based on the facts presented, it appears that the cyclists were not following the rules and knew it.

The officer was doing his/her job.

To be honest, I would get nervous coming upon a big group of cyclists riding fast on a curvy park road, even if there was a passing lane. I'm 46 years old and have a good driving record.

We all have a civic duty to obey the rules of the road, regardless of our mode of transportation.