Question: When Ren is driving with his friends at night, he is told about the circumstances behind the death of Ariel's brother. It was quite clear that it was driving while under the influence of alcohol that was responsible for his death so why blame it on playing loud music?
Answer: One of the kids answers the question during the conversation by saying something along the lines of there's three things involved, and the adults didn't wanna get rid of two of 'em, which left dancing/music.
Answer: The belief was that rock and roll was the root cause of the accident. The adults who supported the ban believed that rock and roll influenced the teens to do things they wouldn't normally do, such as drinking and driving.
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