Personally, i think all of these things tend to be connected in one way or another; that's part of why it's called a "system".
In the past you've had more men encouraged to have jobs than women. Inevitably a lot of those jobs are going to involve marketing, mass media, legislation, etc. If men are more represented in these jobs, you're going to have a man's spin on things. This in and of itself is not a problem, but if you ask the question "where are the women?" you might see where the problem lies. If you have a predominantly male (and, arguably, straight and white) spin on things, you're missing out on a lot of other interpretations on life experiences...especially if they are being interpreted by people who do not actually LIVE those experiences. All walks of life are equally important. This is my main gripe with the system; i tend to focus more on mass media because that's a facet that interests me, but this can be applied to politics, religion, science, etc. as well