Kansas City art dealer Byron Cohen sold more than $1 million worth of contemporary Chinese art at last year’s Art Basel Miami Beach art fair. Now, his gallery's “Looking East,” an exhibit of seven artists from China, includes works that address discord in contemporary Chinese culture. In three oils that may resonate with American buyers, all titled “Power of the People,” Sheng Qi shows his dedication to keeping alive the memory of massacred students, while the government tries to forget the Tiananmen Square uprising...