An unknown series for me

Hello, Here are the things I remember about this series: At the beginning of the series, the actors were shown blurred. I remember that the subject of the series was about a man who killed his family or was killed, escaping from the law or seeking justice. The leading actor had blond hair. I remember watching the series in the late 1970s. If anyone knows what the name of this series is and can write it here, I would be very happy. Thank you in advance for your help.