The North Vietnamese Communists were not freedom fighters. They were a criminal gang (with widespread but nowhere near total support from the population) who conquered North Vietnam and in the process killed many, raped many, tortured many, displaced many, made agriculture suffer, caused starvation, etc.

The conquest of South Vietnam also destroyed agriculture there, leading to mass starvation that killed at least 100,000 people.

He was a lot worse than Kissinger. There was a reason why the US fought against those bastards.