In the 50s, nothing would make a black man run faster than hearing a white man behind him screaming an N word. It's our self-worth and so that is motivating, right? So, it can hit people in different ways, depending on what their underlying sort of psychological profile is. And so, in terms of motivating forces, you could think you're beating someone down when you're just making them mad and now they want to beat you all the more. But it really depends on the individual and what motivates them.