Can communist countries exist with freedom of religion?

A conference was held in South Korea to discuss about if communist countries can exist with freedom of religion?
Panelists insisted that North Korean regime believes they will be destroyed by religion.

http://www.rfa.org/korean/weekly_program/baa9c694-b300b2f4/fe-hk-09052017161016.html

I saw some pictures of Bongsu Chuarch in Pyongyang

This church was founded in 1988 and reformed in 20016 with financial support from a South Korean church organization.

About 200 Christians participated in a worship.

This is the beginning of Christianity in North Korea?

http://www.koreadaily.com/news/read.asp?art_id=777502