@cicerone imposter,
jespah is correct that what you're describing happened because someone reported you.
But facebook only selectively will put people in facebook jail based on reports. If, for instance, you report someone for saying something like "Teach men not to rape. All men are rapists!" or "White people are the most evil people in society.", facebook will leave those up.
But if you post something like "9/11/2001, Never forget.", and some deranged leftist takes that as being "islamophobic", your account can get suspended with no chance for appeal.
It happens all the time. It happened to me.
You must have posted something that one of your friends thought was right leaning or in some way did not blindly accept the progressive narrative.