I wonder if anyone could make a citizen’s arrest of Gregory.
Or that you're a journalist just breaking into the field trying to deliver them to David Gregory to pitch an idea for an upcoming Special Report. The doctrine of journalists being immune from prosecution has already been established by the DC DA's office. Now it's time to take advantage of it.
For instance, a gang banger could start a blog, get a bunch of his homies to follow it, bring high capacity magazines into DC, and claim journalistic immunity on the same grounds that David Gregory was not prosecuted. What could they say?