Regarding takedown demands, Twitter used to publish transparency reports on who was making them, but they stopped after Musk took over.

https://transparency.x.com/en/reports/removal-requests

In the final report 97% of all takedowns were made by Japan, Russia, South Korea, Turkey, and India (from most to least). They also broke down the number of takedowns against verified journalists and news outlets, which was led by India (114 takedowns), Turkey (78), Russia (55), and Pakistan (48), and Brazil was down the list with 8. It would be nice to have a more recent version of this report to see which way the tides have shifted.