The predominantly Atlanta-based four-piece Algiers dwells in sonic and thematic landscapes that are especially of the moment, blending elements of discordant post-punk with fiery traces of soul and gospel music. What results is a complex and heady mix of politically conscious resistance music, with lead singer Franklin James Fisher’s impassioned pipes rising up over the din of programmed drums, vocal samples and biting guitar, offering a voice of strength to the oppressed and downtrodden. The Matador-signed crew headlines this Tuesday show at the Caledonia Lounge alongside fellow ATLiens Omni and Alabama freewheelers Lee Bains III and the Glory Fires.