If you look at the charts on the demographics of Congress in the second article, you'll see that the Democratic party, while still skewed toward white men, is much more diverse. I'm not constructing a "narrative" by highlighting the demographics of the Republican members - it's well known that people who vote Republican tend to (a) be older, whiter, and more male, and (b) consider race and gender equality a relatively low national priority.
That's the way the "system" works, and despite what you've assumed about me, I do not at all believe the system is "fucked". I'm well aware that conservative ideology provides a valuable counterweight to liberal ideology. For example, I don't trust the average liberal to have reasonable opinions about the use of military force or economic stimulus measures.
That does not excuse the injustices against minority groups that conservatives overlook, though. Because conservatism is by definition about maintaining the status quo, it also maintains traditional attitudes about the inferiority of women and "colored" people. This was true during the civil rights movement of the 1960s, when conservatives opposed the Voting Rights Act, and it's true today... which brings us to the point of liberalism: to advocate for change. Liberalism deserves most of the credit for recognizing and addressing injustices against minority groups in recent history, and anyone who makes an honest effort to understand the experience of minority groups today will find it overwhelmingly clear that the injustices have not been resolved.