Pat Perez sat in the back row of the Richmond Citizen’s Police Review Commission’s November meeting, which she’s done every month since 2015. It’s a small conference room, on this night holding all eight review commissioners, and just 10 others, including city officials and representatives talking about police policy and crime rates. Pat Perez was joined by her husband, Richard, and their son Rick Perez Jr. She wore a sign around her neck, with her grandson’s face printed on it. His eyes looked upward…