As an extension of the points made above, we can look at the ways Orwell depicts life under a totalitarian regime. The de-humanization, constant intimidation and anti-intellectualism that besets every person living in Oceania stands as an inevitable set of symptoms of fascism/totalitarianism in government.
"Anyone who thinks subversive thoughts can be turned in by spies or by Big Brother, who monitors them through highly sensitive telescreens. If someone does not have the proper facial expression, they are considered guilty of Facecrime, so all emotions must be extremely carefully guarded" (eNotes).
Thus the message of the book is not limited to the notion that totalitarianism in government is bad. The message extends to the ways in which formal government attitudes can, and do, penetrate into the lives of those living in a society.
When leadership takes on such an extreme political philosophy (one that cannot allow compromise or question, e.g. "totalitarianism"), practical measures must be taken by the government to quell any and all resistance. The paranoia of such a system becomes, in itself, part of the system. People cannot be allowed to think freely, to act freely or to question the policies of the government - even privately.
"Such a pessimistic vision of the future serves a purpose, as Orwell knew. He wrote 1984 as a warning in order to make people aware that this type of society could exist if trends such as jingoism, oppression of the working class, and the erosion of language that expresses the vastness of human experience continued" (eNotes).
Orwell's message then is one of alarm. His message is that specific politics lead to specific social practices, which are unavoidable, inevitable and symptomatic of the nature of those politics.
Be wary of trading your liberty for your safety, we might say, in echo of Benjamin Franklin.