The phrase "polite company" refers to a group of people who follow social etiquette, behave respectfully, and avoid discussing inappropriate or sensitive topics. Full definition
Like they say, the three things you shouldn't discuss in polite company are religion, politics and money, so I'm not going there. (inc.com)
The only moments of emotion occur in isolation — the suggestion being that the white upper - crust is far too refined to allow sloppy human feeling to impose on polite company. (filmfreakcentral.net)
A delicate subject that had been off - limits in polite company became a new, highly public basis for competition among lawyers, who are a fiercely competitive bunch. (slaw.ca)