I'm not sure why the artificial limitations on comparison; Twitter and Facebook are wholly active and engaged in markets with governments with such histories.

I'm not sure why the artificial limitations on comparison; Twitter and Facebook are wholly active and engaged in markets with governments with such histories. Anyway, if you want such examples, look to the Mexican Dirty War for many, as well as the Banana Massacre. The latter of course was merely a threat to deploy the Marines, but the reasoning announced was not strikebreaking but because the strikers were "subversives"; that is, the US claimed to want them silenced not for what they were doing but for what they were saying. In the past, I would have said that Posse Comitatus would have prevented such behavior from being directed toward American citizens, but after seeing the mutual-law-skirting nature of the Five Eyes approach, as well as the presence of Federal troops in law enforcement roles in US cities over the past year, I'm no longer confident.