Tampons and Grape Jelly

When I arrived at a client's house last week, the cops were already there. She'd been accosted, she said, by her neighbors, who had thrown at her door...you guessed it:

Tampons and Grape Jelly.

It was horrifying, three sodden (but clean, thank god) tampons were strewn on the doormat, and great gobs of government-grade jelly oozed slowly down the door frame.

Who inspires that kind of mad hate?