One of my themes in regard to civil liberties is that even IF you trust the present government, you better do NOT trust it with the power to spy on you, keep you arrested without judge's consent based on criminal laws et cetera.
Democracy may have a hiccup and a future government may not be benevolent, it may instead try to establish an authoritarian regime - and then the people shouldn't be accustomed to an authoritarian regime's methods, nor should its tools be in place already.
Even worse; technology may drastically reduce the popular support required to sustain a dictatorship. Electronics-supported spying may be much more personnel-efficient than the old school surveillance state. The DDR collapsed when it ran out of men willing to defend the regime by shooting at the people. In a not-so distant future robots could massacre people at a political demonstration, with minimal popular support required.
Well, a some journalists have pointed out similar views and concerns since Trump's election.