President Obama spoke to the families of the victims of the Navy Yard shooting Sunday, once again taking on the role of “comforter-in-chief” in another mass killing.

The president appeared stern as he spoke at a memorial service for the victims, where he called for “basic common sense action” to reduce gun violence and said Americans should not become “resigned” to periodic mass shootings.

Obama did not, however, mention any proposed legislative changes and instead said the American people must demand change.

The killing of 12 people at the Washington Navy Yard last week was the sixth mass shooting since the president took office.

“No other advanced nation endures this kind of violence, none,” Obama said. “Murder rate with guns is 10 times what it is in developed nations. … It comes about because of decisions we make or fail to make. It falls upon us to make it different.”

There have been five prior mass shootings since the president assumed office: Binghampton, N.Y., (2009); Fort Hood, Texas, (2009); Tucson, Ariz., (2011); Aurora, Colo., (2012); and most recently the killing of 20 children and six adults in an elementary school in Newtown, Conn., last December.

“It ought to be a shock to all of us,” said Obama of Monday’s shooting at the Washington Navy Yard. “It ought to obsess us. It ought to lead to some sort of transformation.”

Source: ABC News