HOUSTON, Texas—In an age where human moral values have declined dramatically and the expression of free speech has been restricted, even in Western democracies, New York-based Shen Yun Performing Arts brought a message of optimism to those at the Wortham Center Brown Theater on Sunday. Enjoying Shen Yun that afternoon were Priti Radia, a Montessori teacher, and her husband, Bimal Radia, who works in financial consulting. “It is very different from the recent Chinese culture because now we know the original culture and it’s beautiful, and it resonates with us—the compassion, the pursuit of art and also so much accomplishment and joy,” Mr. Radia said. “[The performers are] extremely well trained and they are all such good high-level artists,” he said. “There is not a single flaw I saw—impeccable moves,” Mrs. Radia said. ‘Message of Hope’ Michael Shawiak, an insurance financial services underwriter, said that he had a new perspective on …