We are in a world where marginalisation is the order of the day. This is a world where everyone wants to dominate either based on economic power, resource control, gender superiority, higher population advantage or even age; when some people think because they are older than the others, they deserve to be in charge even when they do not have what it takes to manage the position.
But at the root of every marginalisation is a successful discrimination. Even in a nuclear family, once a person is discriminated based on either sex or age, such fellow may become marginalised based on that same factor. Until discrimination is seriously dealt with and stopped, marginalisation will continue to reign.
It is obvious in the world today that the highest form of discrimination and marginalisation is not that of age, race or colour, but gender. This is what gives birth to fight for gender equality around the world today.