>We have university professors condemning math, reason, and objectivity as inherently racist/sexist.

I agree with you completely on this, but do you have some sources for it? I'd be really interested to see how widespread the problem is, exactly.

>We assume that tech is susceptible to horrible gender/racial biases for lacking even distribution of races/genders, but somehow newsrooms and sociology departments are immune to this while being somewhere north of 90:10 liberal:conservative (especially when we know that political bias is much stronger than racial or gender bias).

This is a feature, not a bug. If you're a leftist, at least - this is the true purpose of the "diversity" push to remove white men from positions of power and replace them with left-leaning white women[0] and non-white minorities[1]. It is happening in tech specifically (and not any other male-dominated profession like truck driving, or female-oriented profession like nursing and kindergarten teaching) because tech companies have a vast amount of power and influence, and leftists want to stuff positions of power within those companies with people who will support them.

>These biases are certainly responsible for creating or fostering distrust for these institutions. Why should anyone believe anything about social justice when it is distorted once by a 90:10 sociology department and then again by a 90:10 newsroom?

"Social justice" is a fancy word for radical leftism. Again, it mostly seems to revolve around removing white men from positions of power, and replacing them with people of a more left-leaning demographic.

[0] http://news.gallup.com/poll/120839/Women-Likely-Democrats-Re...

[1] http://brilliantmaps.com/if-only-x-voted/