SAN FRANCISCO (MarketWatch) — “The Interview” may haunt North Korean leader Kim Jong Un’s dreams, thanks in part to South Korean activists who plan on smuggling the controversial movie into North Korea later this month.

Fighters for a Free North Korea, a group led by a North Korean defector Park Sang-Hak, is preparing to float balloons carrying up to 10,000 copies of the movie along with anti-North Korea leaflets across the demilitarized zone into one of the most hermetically sealed countries in the world.

Park is aiming to launch the balloons around March 26 which will mark the fifth anniversary of the sinking of a South Korean warship. The South Korean government has blamed North Korea for the attack which killed 46 sailors.

“Nobody can stop it. I will keep sending leaflets into North Korea at the risk of my life,” Park told the AFP..

North Korea has reportedly threatened that Park will “pay for his crimes in blood” if he doesn't desist, the news agency said.

This isn't the first time North Korea has thrown a fit over “The Interview.” Pyongyang, which viewed the comedy as an attack on the regime, is believed to be behind the hack attack on Sony Pictures Entertainment in November.

Earlier this month, Pyongyang also railed against the South Korean government for allowing activists to send propaganda leaflets and threatened military action. ”We will retaliate with cannons and missiles rather than bullets,” said the North Korean government in a statement posted on its official news website.

Activists in the past have sent Bibles, transistor radios, USB drives, food, and even U.S. dollars in a bid to undermine the government by showing its repressed citizens how good life is outside of North Korea.

It isn’t clear if these guerrilla tactics are doing anything more than annoying the North Korean dictator but it certainly hasn’t slowed the pace of the tactics.