Movement through live action film/tv

I was talking with my support tutor when they suggested a show, explaining personality coming from movement. The tv series called Peaky blinders has many characters, these characters do present a "don't mess with us" or "we don't care what you think" feeling from their walk, here's an example;

Just this simple walk establishes who they are and this can be used as performance for animators to express the feeling even more with the characters they create, which I hope to do with my animation. Just from observing I can feel the strength and power of these characters, almost feeling like they pose a threat which they are doing.