I've participated in Stations of the Cross with Catholics and a crosswalk with Protestants. Both were meaningful Good Friday exercises, but while the stations were in a church building, it was a solitary, contemplative endeavor. The crosswalk was conducted through downtown Amherst, MA with Mercyhouse church members. A community endeavor, as gals and guys took turns carrying a large wooden cross and reading Scriptures, but it was also very much a contemplative exercise.
Christianity is best lived out in private and in public. Such a wonderful paradox.