I say a small clip of this movie when I was very young so probably the early 80’s . it would have been on TV but sure it was a movie. It was in colour and English. I remember a woman and her son being chased from a barn to their car. The chaser was a man with blond hair. This scene haunted me as a child and would live to know what movie it came from.
Was she blonde with short hair? And the boy?
Sounds like Witness (1985)