Walk around multicultural metropolises like Paris or Marseille, or any small village in the French countryside, and signs of faith are everywhere. Many Muslim women wear headscarves and historical Catholic churches anchor nearly every neighborhood. But France’s principle of “laïcité,” loosely translated as “secularism,” means no “excessive” crosses, kippahs, or Islamic head coverings can be worn by staff, students in public schools, hospitals, courts, and sports fields — though visitors and spectators can. And, in line with the International Olympic Committee, this suppression of expressions of faith will be part of the Games beginning in July.