I watch cases like this a LOT and this isn't a million dollar case. It's probably going to net the guy $10k in his pocket (after legal expenses) if this goes about par. But something pretty similar netted $200k recently in New York (I'll get to that case in a sec).
The two most common ways people **** off a cop while doing nothing at all illegal or immoral is to either open carry or point a camera at the wrong cop. The latter triggers far more such activity.
A guy name of Jeff Gray in Florida makes a hobby of this and he is *both* a "camera guy" and a "gun guy". He has never been successfully prosecuted for his activities in either event, however he has recently learned that
200 checks of his background have been made by law enforcement concerned over his activism in guns, cameras or both.
http://photographyisnotacrime.com/2...private-records-200-times-abuse-david-system/
There is precedent in FL that this is bad news for the cops involved and that each of those 200 violations of his rights are separately payable!!!
http://www.nydailynews.com/news/national/fla-trooper-stopped-sues-harassment-article-1.1609641
The $200k case involved a full-on false arrest:
http://photographyisnotacrime.com/2...-wins-200000-settlement-viral-video-incident/
Let's be clear: cops want your ID without probable cause for one of only two possible purposes:
1) To harass you away if you have any outstanding warrants.
2) If you're clean, they are reserving a right to harass you in some form or fashion, as happened in the case documented in the NY Daily News above.
Any cop demanding your ID without probable cause cannot be trusted. Any cop threatening to arrest you for failure to produce ID is your sworn enemy and must be viewed as such, and in Alabama, Virginia and maybe some other states where it is legal to resist false arrest with reasonable force, in my opinion...you should.
I would.