Within the countries? Yes, China is the worst. In relation to the world? The US is the big bad without even real competition. Also the core of the argument was that the world is full of crimes and violations of human rights perpetrated by a lot of countries, it's only when it's convenient to the West that morals and principles become important, but for any sanctioned country there is 1 that does the same and is safe, because they are aligned with the West, or worst, because they are not considered strategic or important and are ignored in consequence.