Conversation so far:
How does the phrase going electric pertain to Bob Dylan?
In 1965, headlining the Newport Folk Festival, Dylan performed his first electric set since high school with a pickup group featuring Mike Bloomfield on guitar and Al Kooper on organ.
When did Bob Dylan performing his first electric set since high school first occur?
1965

Question: Why were people booing?
Self-contained rewrite: Why were people booing at Bob Dylan's electric set at the 1965 Newport Folk Festival?