No, no there isn't. And if holding conservative views makes the workplace "hostile", a ridiculously vague and subjective state of affairs, it's not because of the conservatives.
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.
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.”