MSP Troopers have been deployed on bicycles for at least four years. I was on a ride along with a trooper along the Charles River (H4) and we passed a trooper on a bike. I am positive it was a trooper, because the trooper I was riding with made a point out of harassing his buddy over the PA.
You are absolutely correct about Troopers harassing locals, but my friend (the Trooper I was riding with) told me that this particular harassee was a fellow Trooper. Locals harass Troopers too. I think this forum in general proves how much everyone harasses everyone else. It is all the same job, just different aspects.