Video for speech ethics
What about Joan: Season 1, episode 5
This was a short-lived show (although I can’t imagine why a show about a speech teacher did not top the ratings!). If you can find it, there is a good clip in this episode that works for speech ethics and also for pathos.
Joan’s speech team has won a trip to a national competition but the school board has decided to cut funding for extracurricular activities and the team may not be able to go. In one scene, Joan and her assistant coach Alice practice speeches to give to the board in order to get the funding. Alice’s speech is an excellent example of why ethics matter in speech.