Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. South Korea Blocks NGO From Sending Bibles, Rice to North William Gallo INCHEON, SOUTH KOREA - South Korean police on Friday prevented a Christian activist group from sending aid and Bibles to North Korea, the latest evidence Seoul intends to prevent cross-border distributions that have angered Pyongyang. Voice of the Martyrs Korea, a Seoul-based nongovernmental organization, had planned to float about 500 bottles -- filled with rice, vitamins and Bibles -- into the North from South Korea's western coast. The activists were met by about two dozen local police officers, unidentified plainclothes officials, and local residents, who blocked a road near the intended launch site. A day earlier, North Korea lashed out at conservative activists who for years have floated giant balloons filled with anti-Pyongyang leaflets across the border. Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, said North Korean defectors often involved in such activities are "riff-raffs," "human scum" and "mongrel dogs." .