Days after authorities say a gunman posing as a police officer fatally shot their parents and wounded two others, the children of Democratic Minnesota State Rep. Melissa Hortman, are speaking out about their loss.

The entire Boston University community grieves the loss of one of our cherished alumnae, Melissa Hortman, who was a beloved and respected public servant." The post Slain Minnesota lawmaker attended Boston University,

Minn., joins Morning Joe to discuss the killings of Minnesota lawmaker Melissa Hortman and her husband Mark. Sen. Klobuchar also discusses the social media posting about the shooting from Sen. Mike Lee,