I have an idea! How about instead of dangerously crowding and heckling the bicyclist who is safely and legally executing a left turn in your outrage at being momentarily possibly inconvenienced by the presence of another vehicle on the road in front of you, you put on your grownup pants, sit down, and learn the traffic laws in the state you drive in -- like a goddamned adult?
"Minnesota bicycling law gives cyclists the same rights and responsibilities as motorists. This means that you have the freedom to ride on all streets, except for those which prohibit cyclists."
http://www.ci.minneapolis.mn.us/bicycles/bicycling101/bicycles_understandingthelaw