It matters, because, if someone is just standing there on public land, committing no crime, then a police officer (or anyone else) has NO right to be demanding anything of them.
Quite why you think 14 year olds in bikinis are threats to safety, or had guns (down the bikini tops?) is beyond me. It was quite clear that the young girls the officer was handcuffing and wrestling to the ground were not "threatening safety" or an "unruly crowd".
Really, if you can't see this though, this is a pointless debate. Your language is so loaded I wonder if I watched the same video is you.