Facebook post accused father, brother-in-law and his father, of either physically abusing woman’s sister or ignoring it

A Massachusetts woman shot her brother-in-law, his father, her own dad and herself to death after she publicly accused the first man of physically abusing her sister for years while the other two – along with additional relatives – stood idly by, according to authorities and a chilling social media post that offers an apparent motive for the violence.

The gruesome saga began with a Facebook post published on the afternoon of 23 August in which Khosay Sharifi recounted how her sister has been choked, slapped, kicked, punched in the face and cursed out by her husband of 14 years.

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