Cyclists do get ticketed in my town. Running a red light/stopsign is about $150 or $200, the same as the fine for a motorist.
There are some intersections where cyclists blowing stops (full speed, not even looking) is common when a car has right of way. When the police get complaints from the general citizenry, they will set up a trap for the scofflaws.
There is a group ride from a LBS that uses the same streets at the start and finish of their route. It's about 12 cyclists and I have watched them blow a stopsign at about 20mph causing the cross traffic to slam on the brakes.

There is a nice downhill in town where it's easy to coast over 30mph. The speed limit is 20mph. There is an unprotected crosswalk for families to get from a parking lot to a zoo entrance.
I know of at least one cyclist who got a speeding ticket there after blowing through the crosswalk.