Payton Gendron, 19, who killed 10 Black people at a grocery store in Buffalo in 2022, was sentenced to life in prison without parole in an emotionally charged hearing on Wednesday.

NBC News reported that many of those affected by Gendron’s actions spoke, including Barbara Massey, the sister of victim Katherine Massey. Her powerful words to the 19-year-old, who opened fire at the Tops Friendly Market on May 14, set the tone of the sentencing hearing.