many times throughout the series an outlaw will try and kiss one of the women (Jonsey or Frankie) sometimes they welcome it as part of their undercover work and other times they fight back.

Some of the outlaws kiss the women forcefully

every episode involves some person getting killed in one way or another. sometimes it's a bloodless gun shot or in the Kate Bender episode it involves a character being dragged behind a wagon through sharp rocks for a long distance (no closeups) Another episode revolves around a mad Mexican who captures people and traps them on train tracks to watch them get run over and killed.

Many many gunfights (all bloodless)

many times Matt gets into fist fights with outlaws and blood is often shown coming from his nose and cuts on his forehead and cheeks. Often an outlaw will sic his gang of 2-3 on Matt and this will result in a worse beating. Hangings are often the ending to many episodes.

Frankie gets into fights with female characters occasionally.

Drinking and drunkenness are shown many times

Many scenes take place in saloons and bars