Activist Group Stops Planned Balloon Launch into North Korea Due to Local Pushback

The locals are concerned that these balloon launches could lead to a North Korean provocation against them which is why there has been so much pushback:

A South Korean activist group called off its plan to launch balloons carrying anti-Pyongyang leaflets to the North across the heavily fortified frontier on Thursday after facing local opposition and police prevention due to potential security risks to residents.

Choi Sung-ryong, head of the Association of the Families of Those Abducted by North Korea, announced that the organization would cancel its decision to scatter propaganda leaflets in the North during a press conference held at the National Memorial for Abductees during the Korean War in the western border city of Paju, Gyeonggi Province.

The group had initially planned to float some 100,000 copies of the leaflet made of plastic — containing photos and descriptions of six abductee victims — attached to large balloons along with one-dollar bills on this day.

Korea Herald

You can read more at the link, but the activists are now saying they are going to instead fly drones into North Korea instead which will actually be more provocative than the balloons.