In 2006, a restaurateur in a suburb of Mumbai, India, named a cafe “Hitler’s Cross” and put a swastika in its logo. In 2014, a controversy erupted over a Nazi-themed cafe in Indonesia, as well as an Italian restaurant in Taiwan that had named a pasta dish with German sausage “Long Live the Nazis.”

Also that year, the South Korean pop band Pritz danced in outfits that resembled Nazi uniforms.

And in 2016, a high school parade in Taiwan featured students dressed as Nazi soldiers. That echoed an earlier Nazi-themed school parade in Thailand, and foreshadowed a controversy in Taiwan last year over a swastika that hung outside a hair salon.

Typically, such controversies over Nazi or Hitlerian iconography in Asia are followed by humble apologies, but also a recognition that local awareness of Nazis and the Holocaust is inadequate.

After the Nazi-themed school parade in Taiwan, for example, a local Jewish center expressed regret about the use of Nazi imagery and logos. But the center’s chairman also said the act was “not meant to be an act of anti-Semitism” and that Holocaust education in Taiwan was “extremely limited.”

Mr. Li, a historian who specializes in Holocaust pedagogy, said that some school curriculums across Asia touched on 20th century atrocities, including the Japanese Army’s notorious 1937 massacre in the Chinese city of Nanking (now known as Nanjing) and the treatment of the tens of thousands of “comfort women” who were detained and raped by Japanese soldiers before and during World War II.

But there is little education in the region about genocides generally and the Holocaust in particular, Mr. Li added, partly because many teachers are unsure how to tell students about the scale of the horrors.