I think it's funny that they use the term "Propagandists" when refering to Al-Queda, but "Think Tank" when referring to the USA. Maybe there's actually a diffe

I think it's funny that they use the term "Propagandists" when refering to Al-Queda, but "Think Tank" when referring to the USA. Maybe there's actually a difference between a think tank and a propagandist. Can someone elucidate me?