That story dropped right when the Beatles had completed a show in Detroit. Their next stop was the following week at Comiskey Park in Chicago.
My then 17 year-old mother had a ticket to that concert. A few months earlier she had snuck out of her house at 2AM with a sleeping bag and camped out in front of the Comiskey Park box office to make certain she could procure that ticket.
My grandmother was a devoted, hardline Irish Catholic. The word came down from the local parish that anything Beatles related was an abomination, an egregious sin that must be eradicated. My grandmother's response was to forbid my mother from attending the concert. She demanded the ticket from my mother's bureau so she could
tear it up into pieces and flush it down the toilet.
My mother's response was to bring the ticket and her completed admissions form to Illinois State University. She told my grandmother if the Beatles ticket was torn up so would the admissions form, and she would refuse to fill out another one.
My grandmother relented and my mother always said the concert was one of the happiest days of her life.
This clip is of John in Chicago at their hotel trying to clarify his remarks:
https://youtu.be/ONYVxatB1U4?t=26