SPRINGFIELD — A downstate jury found Sean Grayson, a former Sangamon County sheriff’s deputy, guilty of second-degree murder on Wednesday in the killing last year of Sonya Massey inside her home near Springfield, a case that sparked national outrage and calls for police reforms.

The mostly white, 12-member jury in Peoria announced its verdict one week after testimony began in a case that focused on graphic police body camera footage of Grayson, who is white, fatally shooting Massey, a 36-year-old Black mother of two, after he repeatedly shouted at her to drop a pot of boiling water. It also centered on the prosecution’s accusations that Grayson, now 31, repeatedly failed to follow law enforcement policies or training, damaging testimony from Grayson’s partner that suggested Grayson di

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