When a character is going through something, we are able to see the situation from their perspective and end up sympathizing with them since we've been reading from their side. The sympathy leads us to the direction of siding with them ending with us being persuaded.
It is important to have POC in places of power because, we need more representation of all races in the world. It shows the younger POC that they can do anything no matter the color of their skin. We need more women in places of power to encourage gender equality and show the world that women can do the same things men can do.