What is a short summary of the story, The Temple of Practical Arts, from the anthology, The World Doesn’t Require You?

The Temple of Practical Arts takes place at the religious, musical temple founded by David Sherman sometime after the events of “David Sherman, the Last Son of God.” The story focuses on Slim, narrator whose band is trying out to advance in the training at the temple. Frustrated by his lack of progress and the progress of a wanderer called “The Kid,” Slim causes the temple’s raid by white police from Port Yooga which leads to the temples demise.