I don't think there's anything wrong with using 'shock tactics' [=actions, images, stories, etc., that surprise and upset people] to discourage people from driving while drunk.
We 'were shocked into' silence by what we saw. [=we were so surprised and upset by what we saw that we could not say anything]
He got the 'shock of his life' [=he was very unpleasantly surprised] when he saw his own name on the list.
(..) Dialogue: ..,Default,,,No offense to you there, doc. Dialogue: ..,Default,,,Mm, well, promise me you will\Ntake care of yourself. Dialogue: ..,Default,,,Your body is still in shock. Dialogue: ..,Default,,,But you're letting me out of\Nhere, so I must be doing well. (..)2016 TvShow: Bones Title: The Death in the Defense Season: 11 Episode 11
(..) and you were fine. Yes. Although, for some reason that I do not understand, I kept staging my own death. Pretending that I drowned in the bathtub, faking electrical shock. It really freaked my parents out. And then, once, when Russ found me hanging, he had to go see the school psychologist. (..)2008 TvShow: Bones Title: The Finger in the Nest Season: 4 Episode 3
(..) with a high-lofted ball. Desperation time, really, for Real Madrid. The super sub with a super goal! Two-two! Arsenal's shell-shocked. The Bernab'u is rocking. They really believe they could win this final now. They've scored once in stoppage time. Can they do it again? (..)2007 Goal II: Living the Dream