If you have views that are in the minority and not directly related to your task at work it is smarter to keep those to yourself in my opinion. Lying is optional. Its just easier for them to perceive me as the quiet guy who keeps to himself.
I am not a capitalist. Telling my bosses that I view a large portion of our work as simply and needlessly extracting excess money and labor from individuals isnt going to advance my career and is unlikely to result in anyone changing their worldview. It is more likely to mean im passed over for a promotion.