Definition of dissidents:
(n) :
A person who formally opposes the current political structure, the political group in power, the policies of the political group in power, or current laws.
(adj) :
In a manner that disagrees; dissenting; discordant.
(n) :
(Christianity) One who disagrees or dissents; one who separates from the established religion.
(adj) :
(Northern Ireland) Continuing violent actions despite a ceasefire (especially the Good Friday Agreement).
(n) :
(Christianity, specifically, historical) Sometimes Dissident: in the kingdom of Poland, the name for Christians not part of the Roman Catholic Church.