None.

Photos of Bobby Kennedy's shooting death is shown multiple times in a couple episodes. Blood and anguish are readily obvious.

Famous graphic footage of the assassination of JFK.

Many scenes, every single episode, of violent riots and altercations between protesters and police, people are viciously beaten, police are injured by rocks and other weapons, gunshot wounds are shown, scenes of mass lawlessness, entire city blocks on fire and destroyed. People with bloody injuries are shown.

Frequent and often harsh uses of the N-word, but no other serious language.

Politicians and others are sometimes shown consuming hard alcohol as well as smoking cigarettes and cigars in times of great stress.

The viciousness of racist language as well as the apocalyptic riot footage that includes bloodied people and destroyed city blocks may be frightening to young children.