No doubt individuals who post content on social media cannot just 'blow off some steam' unless it is thoroughly researched or proven otherwise. In most cases, individuals who post contents online are held legally responsible if their contents or statements are misleading or defamatory.
However, they are not held legally responsible for any forms of criminal activity as publishing wrong contents or making defamatory statements usually fall under the purview of 'tort' or civil cases. The parties are also liable to be sued for libel or defamation in civil courts.
Do US Constitution provides the floor beneath individual rights, well stating constitutions can provide greater but not lesser protection. So I think it’s c but I’m not sure!!
