The South were not above bad behaviour, some evidence of which is in the Museum of War Remnants in HCMC, but this is true of most wars ever.

I don’t think it’s useful to make a good/bad guys argument case for North vs South, but it is easy to make a case that the USA committed a lot of heinous atrocities in that whole region for little reason beyond the fact that the rich people in charge didn’t like the idea of communism becoming popular and their wealth being taken from them.

There are no shortage of stories of Viet Cong being sneaky or less than gracious hosts to captured POWs, but these often skim over the fact that they were the ones being invaded; it’s churlish to conduct a massively asymmetrical assault on a peasant village with helicopters, bombers and Agent Orange, and then complain that their prison facilities weren’t up to your standards…