The Standard C++ Foundation and the global C++ community welcome and encourage participation by everyone. Our community is based on mutual respect, tolerance, and encouragement, and we are working to help each other live up to these principles. We want our community to be more diverse: whoever you are, and whatever your background, we welcome you.
The Foundation runs CppCon, for which it has set up the CppCon Code of Conduct.
ISO standards meetings are governed by the ISO Code of Conduct.
These codes are regularly linked to, respectively, from CppCon.org (e.g., cppcon.org/codeofconduct and cppcon.org/welcome/) and ISO C++ meeting agendas and other places (e.g., Feb 2014 agenda and standing document SD4: WG21 Practices and Procedures).