But obviously there is a spectrum, some countries (like Belgium) have very little difference between their all cause mortality rate and their reported rates due

But obviously there is a spectrum, some countries (like Belgium) have very little difference between their all cause mortality rate and their reported rates due to effects (not just direct) of the crisis. Other countries (and going by this report that would seem to include Iran) are heavily underreporting to the tune of 60%. And then obviously you have countries that are somewhat underreporting like the UK, where they have reported covid deaths of approximately 46 thousand, but excess deaths of 64 thousand giving an approximate underreporting in the order of 25+%. As to the revolution, it's not likely the cause as merely another example of a tightly controlled society that is sensitive to criticism; a reflection of their fear of "losing control". "Beware of him that would deny you access to information, for in his heart he dreams himself your master."