Well after watching the video for myself I didn't see any personal space violation either.
The guy was a respectful distance when he asked the question. The staffer asked for evidence and the reporter offered to open up his laptop and show him his documentation and the staffer walked away. The guy followed, but as soon as the staffer turned around he stopped. The staffer is the one that kept getting closer to the reporter.
Now as an active member of the press I wouldn't condone what this reporter did as it would have been much more effective to show video of the question being asked and then the staffer walking away.
But there is NOTHING in the video (and I watched the green pigskin video) that warrants an arrest. The staffer had every right to have the guy removed I "suppose." Not sure of that even, but there is no way he should have been arrested and there is no way his camera should have been taken away.
Better take a long look at that video of the guy being walked away in cuffs, because it wouldn't surprise me when the day comes that is a Chrsitian man or women being escorted away for standing up for the Truth of Scripture.
But that's just my $.02 and some say it's not worth that

.