This is important for not just your job, but for your reputation. When posting things on social media it is important that you understand the content that you are posting and know what content can be offensive or innapropriate. Therefor, if you post someting that is violating the rules of the type of social media and if reflects on you as a person and where you work and who your family raised you to be then yes, social media can and will, get you fired, and you'd have no one else to blame.
"The impersonal voice of the computer and the failure to connect add to Faizula's stress and frustration." Sorry it's a few days late, but just for anyone else who wants to know.