A man reenacts a stabbing, causing several other men to gasp, but not injuries.
One man becomes angry and lunges at another man, but is physically held back by others.
People are talking about someone stabbing someone in his chest with a knife, They are talking about it several times, But nothing is shown at all. Just talked about it.
A boy allegedly murdering his father by stabbing is the central point of the film and the killing is discussed at length and very explicitly.