I'm not in favor of the tax.  I said that.  However when I see bicycles running red lights and stop signs, terrorizing people on sidewalks, or speeding, and I know that the police won't do anything about them, I have sympathy for the idea of a punitive tax on bicycles.  

When a cyclist intentionally scares a pedestrian by riding close to them at high speed, it is a Class 5 felony in Colorado.  It is time that cyclists started getting busted.

The tax is still a bad idea.  But it is a better idea than some of the things that can be done to rude cyclists.