That's my feelings too. I suspect there's a lot left out of the report and video clip. For example, how long had he been mocking him? I get the feeling he'd be at it for a long time before the video camera got turned on.

I'm surprised, frankly, that this kind of disrespectful behaviour is effectively allowed.

This is what the Yanks do at the tomb of the Unknown Soldier do when someone crosses the barricade:

Don't cross the barricade!

Personally, I think there should have been other people there who should have dealt with this punk long before the Guardsman lost his cool.

By the way, I just read that he's not going to be officially disciplined for this. Ouch! I've been awarded unofficial discipline once or twice. It's generally worse than formal discipline.