Balloon propaganda campaigns in Korea include both North and South Korean propaganda leaflet campaigns through the use of balloons as a distribution method since the Korean War. A variety of other contents have also been included with the balloons. Originally, these campaigns were organized by the governments and militaries of the Korean states. Contemporarily, however, they are mainly organized by South Korean non-governmental organizations (NGOs) that regularly involve themselves in balloon release events that aim to send materials censored in North Korea, as well as various other goods, to the North Korean people.