Violet Roosevelt was an elderly woman who was killed by Wally Forton.
Wally showed up at Tanya's house and demanded to get inside, presumably to go see Melissa. Tanya didn't open up the door and instead called the cops. About 40 or so minutes later, he came back to her house and broke in, killing Violet and her sister Tanya with a meat tenderizer.
Violet and her sister's deaths would later spark a riot and lead to a revolt against several LAPD officers.