Have never seen (Putin- style, but now can be used by anyone) troll-bot thing as a tool explained better. It is also helpful for us in the U.S. to see "voter supression" in action removed from racial issues. The most fruitful way to use it is to target low info. voters cynical about politics and politicians:

If they lead the pro-EU side in a new referendum, we will be destroyed. A well-funded alliance will deploy its expertise and, boy, will they throw in everything they can, and more, to secure Brexit.

Their key skill is in the dark arts of voter suppression. Paul Hilder has set out an authoritative analysis of how it works. Voter suppression uses psychographic algorithms to identify key segments of the population. They are then forensically targeted with quick videos showing, for example, Blair on the People’s Vote platform and then on a ski ride in Davos, calling for a new referendum – with his net worth as the subtitle. The message: that the referendum is a rip-off and “they are all the same”. Market testing reveals what images and phrases “work”. The aim is not to convert, but to disillusion and thereby turn young voters especially into abstainers.

It really does strike at the heart of small d democracy, as it suggests that those with a certain low education level and/or with little life experience can always  be easily manipulated to abstain from voting.

One thing this shows is that dropping civics type classes at high school level for those on a working-class track should no longer be an option.It's going to come back and bite if governments stop trying and just give up on the front of trying to teach people to think critically about what they read and see. Regulating entities like Facebook can only go so far, there will always be another route.

and the answer is: noooo-body can fixit: