Democratic presidential candidates continue to throw shade on the legacy of former President Barack Obama. They rarely criticize him by name, but many of the 2020 hopefuls have implicitly attacked Obama's record on health care, immigration, and climate change, among other issues. The latest example of implied criticism focuses on the Obama administration's investigation into the controversial police-involved shooting death of Michael Brown in Ferguson, Mo., in 2014. Sens. Elizabeth Warren (D., Mass) and Kamala Harris (D., Calif.) marked the five-year anniversary of Brown's death on Twitter by asserting that he was "murdered."