There have probably been hundreds (if not thousands) of friendly encounters between chasers and law enforcement officers over the years. This single instance, in which something went terribly wrong, is the one that's generating all the publicity and flap. I can't see that as being a good thing.
I have a healthy respect for law enforcement officers. The average law enforcement officer is still expected to be able to, for example, subdue an armed, cocaine-addled suspect, and wade into dangerous situations that the rest of us would prefer to avoid. However, as has been repeatedly pointed out on this thread, the average storm chaser will know more about weather than the average law enforcement officer. For this reason, I seek to assist law enforcement whenever I can (offering data, information, etc.)
While I'm as staunch a proponent of civil liberties as you're likely to find, I find it's almost never worth it to tangle with people who carry loaded guns, have the power to lock you up, or to make your life miserable for months as you drag your case out through the courts. I suspect Mr. Barnes will experience some pangs of regret as he realizes how much of his time will be consumed by this case in the coming months.