

Echo chambers would have been far more effective. Algorithm curated feeds would have amplified all extremes when further. If you think fascism went too far under Mussolini, just think how that would have looked like when everyone is scrolling FearBook and upvoting @ilDuce.
On the other hand, pictures of gulags, famine and concentration camps would have leaked out a lot sooner.

Why though? I think the Arab spring says otherwise.