Looks like they are assisting a choking victim with the Heimlich maneuver to me.
Not only is she acting, she's not acting very well. No hand anywhere near her throat, let alone any serious pressure on it.
Probably screaming or making choking noises at the top of her lungs, which means she ISN'T being choked out, because if she was, she wouldn't be making any noise.
Jesus these people make me wanna throat punch them.