Growing up, children were taught to "be seen and not heard." It was a matter of being polite around adults. But it is also important to teach children to speak out, especially women and, especially, if they are facing an injustice.
Among my few regrets in life are the times when I didn't speak up, negotiate harder on a contract or present myself with my full voice of confidence. Odds were the outcomes did not work in my favor.
Also read: Books That Speak the Truth to Boys