Outside of the city. The most distant park you can find. Everybody will still hear you, but not as loud. (They prepare for Good Friday and I might finally look into a church that otherwise normally is closed, because the parade starts from there.)
One of the best moments today inspired me to think of a potential short movie. A teenage boy was talking to a girl outside plaza del torro (where the torreros kills the bulls slowly). She replied by banging on the drum. Excellent conversation, open for interpretation.