How does a literature professor at Stony Brook end up in jail in Cameroon? He wrote an article critical of how the government is treating its English speaking people.
It turned out relatively will for the professor who holds dual citizenship between Cameroon and the US as he was expelled from the nation of his birth and told not to return. Charges against him included issuing a death threat; insulting constitutional bodies, specifically the military; and inciting violence in a Facebook post.
Be aware that foreign governments monitor your Facebook accounts.