"This is what I call a 'gun gesture.' It's unusual in women, but not in women who have great power. Gestures like this are often coached. Basically, she's shooting her idea at her audience. She's saying, 'Take this idea or I'm going to kill you!' Well, not really, but there's intensity."
"Her chin's up, her mouth's wide open, and she has this intense angry gaze. That tells me more about her feeling at that particular moment, that she's forceful and angry and wants to be heard. And, broader to her personality, this picture shows she's not afraid to do that. That's not typical in all female speakers."