I read the WSJ. Online, many articles have comments sections. The articles on Ukraine and related events are inundated with comments from Russians, feigning to be Americans or westerners, pushing the Putin line. Some are better than others. (I use this as an example, not to pillory the WSJ, but because I’m not on Dacebook yet and that’s my best example).
People, to varying degrees, like to conform. They can change their opinion about politics, sports, arts and even mores, if they are convinced their side/tribe is changing its opinion. This has been wired into us by tens of thousands of years of evolution and socialization.
In a short time, AI will present as hordes of new posters, programmed to swarm discussions, pushing one view. It will seem realistic, and it will be effective.
More than ever, we need to teach and develop critical reasoning, understanding what makes an argument strong, other than “my side believes this” or “most people believe that”. I think it’s worth educating ourselves on logical fallacies, and upping our games.