Am I allowed to go and do video coverage at a church?

Praise be to Allah, the Lord of the World; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

Entering the church and making a video coverage of what goes on inside it is lawful if the objective behind it is lawful, such as making reportage about some people kidnapped in that church, provided one does not make publicity for the church and those who are in charge of it.
It is however, prohibited to attend their religious ceremonies, or their feasts, or to make a video reportage of that.
Allah knows best.