Do you entertain BS to keep the peace or stick with fact & truth no matter what?

Do you go along with pleasant BS or rock the boat and stand up for the truth, facts and logic? Say you were working in a company and the usual “water cooler quarterbacks” were spinning their ideal about who and what management is, the union reps, or the company lawyers to keep with the “in” crowd do you buy in and support the fanciful BS or will you go with the facts even if it pisses people off because it shatters their made up ideal of the situation? And would you use the same approach when it comes to neighbors?