Complain, and complain loudly. Handcuffing you when you'd done nothing provocative was way out of line. The officer in question needs to be called to account for his actions.
I don't know about your state, but here in Oregon to get a CHL you must have no record of any previous felony, no previous violent misdemeanor, no misdemeanors in the last five years (maybe it's three), no history of any offense involving weapons, no outstanding courtorders involving violence or weapons, no complaints against you on file. It basically says you're a very good person. No Oregon officer has ever been attacked by an OR CHL holder. In Oregon in general, the police treat you better when then find you you have a CHL because they know that statistically you are among the least likely to attack them.
File a formal complaint and insist that it be resolved fully through whatever formal process is in place. Even if the ultimate resolution is that the officer acted within his rights, the fact that a complaint was filed still goes in his record. If he accumulates to many of those, it'll prove career-limiting for him. Police departments like officers who can do their job while maintaining a positive relationship and image with the public. The mere fact that an officer provoked a citizen enough to cause that citizen to formally complain, should be viewed poorly by his superiors, especially if quite a number of complaints accumulate against a single officer.
When you make your complaint, don't exagerate. Avoid any inflamatory or provocative language. State the facts professionally.
The other thing you may be able to do is demand to see the officer's record to see if there have been other complaints. In many states, at least some portion of an officer's personnel file is a public record which you can demand and see. Again, just demanding to see the file will create some stir. I know if I was in a job where I knew that my file was public record, I'd want to keep it as clean as possible. In areas where such information is a matter of public record, departments are going to want officers to keep those files clean too. If an officer does suddenly become involved in some controversial situation, maybe a shooting or something, they know that the first thing the local media are going to do is demand those files and comb through 'em for any detail they can use about the officers involved. "While police authorities insist that the shooting was justified, police records show that the officer who fired the fatal shots was involved in X citizen complaints last year and was accused of using excessive force Y times." That sort of thing doesn't sound good. Just about every department is required to publish a composite statistic of the number of complaints they receive every year and, for obvious reasons, they want that number to be as small as possible. So, if one officer seems to be inspiring more than his share of complaints, you can bet that there'll be some pressure brought to bear on him.
In many areas, to make these things happen you must file an "official" complaint. A letter to the chief may not be considered an "official" complaint. There may be a form you have to fill out. There may be a specific process you have to go through to file it, etc. Find out what those processes are and make sure your complaint is as offcial as you can get it.
Oh, and CC the Mayor's office too.
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Chuck
Balisongs -- because it don't mean a thing if it ain't got that swing!
http://www.balisongcollector.com