The police involved in the Starbucks Affair aught to be sued to the ends of the earth, not so much for whatever monetary reward might be gained, some if likely warranted, but to drive home the FACT that the police are required to operate according to what the law actually says, and not according to what they might like it to say, or according to what they have interpreted it to say.
As for the differences between Washington, D. C., where the possession of firearms, for the law abiding has been virtually eliminated, and the situation in Virginia, obviously markedly different, Gun Control ala Washington, D. C. does not work, whereas Gun Control, ala Virginia, at the very least, has many fewer problems.
Draw your own conclusions, though if one considers the fact that A CRIME EMERGENCY, has been declared in D.C., and nothing of the sort has happened in any part of Virginia, where does the problem lie, seems a self answering question.