By the 1920s, the physical transformation in the urban space of Montmartre led two groups of artists to "secede" from the city of Paris, at least in spirit. Calling themselves the Commune Libre de Montmartre and the République de Montmartre, these painters, illustrators, poets, writers, and musicians articulated a distinctive community-based identity centered around mutual aid, sociability, and limiting urban development. They also reached out to the poor of the neighborhood through charity efforts, thus linking their fates with those of other area residents. Through these organizations, neighborhood artists came to terms with the changes taking place in the city of Paris in the 1920s by navigating between nostalgia and modernism. They sought to keep alive an older vision of the artists' Montmartre while adapting to the new conditions of the post-World War I city.