(DC) (Congressional Cemetery) Celebrate Autumn’s Equinox and join the festive procession of Samba-Reggae drummers with Batalá, Washington’s Afro-Brazilian all-female percussion band. In the tradition of a New Orleans ‘Second Line’ procession, revelers will fall in behind the drummers’ syncopated rhythms for a quarter mile spirited walk to the Circle of Life tree-henge to observe the sun slipping over the western ...