Angered by Japan’s move to restrict exports of vital manufacturing materials to the country, South Koreans have taken to Instagram and other social-media platforms to show their support for boycotts of Japanese travel and consumer products.

More than 2,400 public posts with hashtag #BoycottJapan have been shared on Instagram since the measures were imposed Thursday, with some including a picture using Japan’s red rising sun icon as “O” in the word “No.”

“NO, Boycott Japan: Don’t go, don’t buy,” it says.

While support for any boycott so far appears limited, the push highlights the growing risk of open economic warfare between the two U.S. allies. Last week, Japanese Prime Minister Shinzo Abe’s government announced the restrictions on sales to South Korea of materials necessary to produce vital components in high-tech manufacturing. South Korea is Japan’s third-largest export market, worth $53.5 billion (5.79 trillion yen) in trade last year.

The latest flare-up amid decades of ill-will over Japan’s past aggression came when South Korean courts seized assets belonging to Japanese companies they held liable for cases of forced labor during the 1910-1945 period of colonization. Although Abe has denied that the export controls are retaliation, the spat has fanned nationalistic sentiments in both countries.

In recent days, South Korean internet users have been sharing cancellation confirmations for flights to Tokyo, Osaka and other popular travel destinations. South Koreans make up 13 percent of spending by foreign tourists in Japan, according to the Japan Tourism Agency, or $5.4 billion (584.2 billion yen) in 2018.

They’ve also circulated lists of “Korean alternative” products to replace Japanese goods. Koreans are being encouraged to shop at SPAO, Samsung C&T’s 8 Seconds or Top 10, instead of Fast Retailing’s Uniqlo. They’re also urging people to consider Able C&C’s Missha’s beauty products instead those by Shiseido, as well as beer from Hite Jinro but not Asahi Group.

Fast Retailing gets about 6.7 percent of its sales from South Korea, while a South Korean joint venture between Asahi and Lotte Chilsung Beverage earned less than 1 percent of its revenue there, according to data compiled by Bloomberg.

“We are paying attention to the development of any boycott,” said Kei Sakurai, a spokesman for Asahi.

Meanwhile, an umbrella association of South Korean mom-and-pop stores announced has announced its participation in the boycott.

The Korean Supermarkets Alliance, an organization representing more than 23,000 stores, said it would temporarily halt sales of Japanese products, including beers by Asahi and Kirin Holdings, and Japan Tobacco’s Mild Seven cigarettes. “We will fight Japan’s attitude toward its wartime history and retaliatory measures,” association President Lim Won-bae said in a statement.

©2019 Bloomberg L.P.

This article was written by Heejin Kim and Jihye Lee from Bloomberg and was legally licensed through the NewsCred publisher network. Please direct all licensing questions to legal@newscred.com.

Photo Credit: An 8Seconds fashion store in Seoul. SeongJoon Cho/Bloomberg / SeongJoon Cho/Bloomberg