evidence: Amber Alerts are rare. A Milwaukee grandmother thinks one could have saved her family. [...] And even when they are used, it’s unclear how much they help to bring children home safely, the analysis found. Although Black children receive Amber Alerts at about the same rate they are reported missing, USA TODAY found the alerts are far less likely to play a part in finding them. [...] In that six-year time period, Milwaukee police made 28 requests. Twelve were activated and 16 were not. All of the Amber Alerts issued in Milwaukee cases were for Black children.