I see your point, but I disagree. The people involved in XR are British citizens. If they were to go to China and start performing acts of civil disobedience,

I see your point, but I disagree. The people involved in XR are British citizens. If they were to go to China and start performing acts of civil disobedience, they'd simply be deported (or worse). Instead, they're trying to effect change in a place where they're afforded civil liberties to do so. I don't claim to speak for that movement, and maybe I'm not even thinking along the same lines as they are, but I would guess their hope is that if they change their home country then that example will help to influence other nations.