For sure we live in a non-truth era. If it is the Post-truth era, will be an other matter, because that implies the world has already sean a Truth-era.
A great problem we do have to face today is that the news-gathering and news-spreading is full of fake or false news, and worse of all that many fall in the trap of those news-spreaders. And multiply the spreading by resending it by social media.
Do Governments and Nations Lie?
For hiding and protecting their crimes and criminals?
Jesus was offered the kingdom over the whole world, if he only would commit a crime against the then Roman cesar as an act of worship to Antijehovah.
This is one law of power: you do not receive power over other humans freely but only by being designated by more powerful persons or by disadvantaging at least one competitor.
Are we living in the Post Truth Era?
Only if we trust inferior preliminary gods more then our supreme true ones.