The White House said Obama called Kathleen Goforth from Air Force One Monday on his way to Alaska, and offered condolences. She is the widow of Harris County Deputy Sheriff Darren Goforth, whose death has recieved national attention because authorities believe it may be linked to a backlash over police shootings of unarmed black men. On Monday, 30-year-old Shannon J. Miles was arraigned on Monday on a murder charge that could bring the death penalty. 
In a statement, obama asked for support of police families. 
"I also promised that I would continue to highlight the uncommon bravery that police officers show in our communities every single day. They put their lives on the line for our safety," obama said in the statement. "Targeting police officers is completely unacceptable — an affront to civilized society."