Parents of those killed at Sandy Hook Elementary School are speaking out about the Senate's failure to approve background checks for more firearms sales.

We are not defeated and we will not be defeated.  Those words from Mark Barden whose son Daniel was killed on December 14. He appeared with President Barack Obama following the vote yesterday. He says families are returning home ``disappointed but not defeated.''  He said no one should feel the pain of those who've lost loved ones to senseless violence and that what happened in Newtown can happen anywhere, in an instant any dad in America could be in his shoes.

Barden said the families will return home disappointed, but not defeated.  He continued to say they they will return with the determination that change will happen.

"We will always be here because we have no other choice, we are not going away.  Everyday as more people are killed in this country because of gun violence our determination grows stronger.  We leave Washington hoping that others here and across the country will take The Sandy Hook Promise,  a pledge that we had great hope more U.S. Senators would take literally."

Barden then quoted the opening words: "Our hearts are broken, but our spirit is not."

Neil Heslin, whose 6-year-old son Jesse Lewis was killed, calls the vote discouraging but says the process is only just beginning.

Also appearing with the President were Jimmy Greene, Nicole Hockley, Jeremy Richman and other members of the Barden family along with former Congresswoman Gabrielle Giffords.