#BoycottJapan is trending in South Korea.

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 the 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."