Not always Tor, which is safe as far as I know IF you can get a Tor connection.
Plenty have been caught and killed or tortured thanks to US tech sold to their governments (and not using Tor level security) so I'm not sure about them being more savvy. The consequences are certainly higher, so they probably are more careful.
It's the domestic people who confuse me, no encryption, from a cell phone account in their name and then thinking "Twitter will break the law to protect me!"
Maybe US Agitators just aren't as savvy as their counterparts in the more oppressive parts of the world.