If you read the article the mangers don't talk about conservative views but 'anti-diversity' views, which make more sense how they can make an environment more "hostile".
If you believe that your company should hire the best and most qualified people for the job, you probably hold "anti-diversity" views.
If you do not believe me, below are some examples of "rascist" and "sexist" statements, per the University of Minnesota:
http://sph.umn.edu/site/docs/hewg/microaggressions.pdf
Examples:
“I believe the most qualified person should get the job.”
“America is a melting pot.”
“Everyone can succeed in this society, if they work hard enough.”
“Where were you born?”
“You speak good English.”
1) You (for instance) don't support affirmative action 2) You are a dick to other genders/races in your team
(2) does not always follow (1). Only (2) should be a matter for disciplinary action.