I wish I could see the whole video. Looking at those frames that Drudge picked to display does make you wonder if the girl is a willing participant, but I'll take the word of those here that have seen the video that she is laughing and not protesting the treatment.
What would make the difference to me is if she was crying and telling them to stop. If she is laughing and going along with it, then I fail to see any problem and don't find it inappropriate at all.
Click on the link in the body of the story.