A person who formally opposes the current political structure, opposes the political group in power, opposes the policies of the political group in power, or opposes current laws
Dissidents are people who disagree with and criticize their government, especially because it is undemocratic. political dissidents
Dissident people disagree with or criticize their government or a powerful organization they belong to. a dissident Russian novelist. someone who publicly criticizes the government in a country where this is punished (dissidere , from sedere )