Ahead of the 11th anniversary of the shooting at Sandy Hook Elementary School, Connecticut's congressional delegation called for change to gun laws on Thursday.

Speaking at a news conference attended by families who have lost loved ones to gun violence, Sen. Chris Murphy said the anti-gun movement continues to have move power than the gun lobbies.

Murphy cites the Bipartisan Safer Communities Act as an example. He said since the act was passed last summer, gun violence is down 12%.

Murphy also said if Congress continues to change the laws of the country, they will continue to save more lives.

He remains committed to being part of what he calls a great social change movement.

"We have crossed the Rubicon where we can consistently win, but only if we keep it up. Only if we decide to continue to show up and organize and raise our voices. We are seeking to cure a fundamental injustice in this country. The injustice of kids and families waking up every single day especially in the most violent neighborhoods and fearing for their life every single moment they walk out the door," says Murphy.

However, the fight for change continues to face hurtles.

On Wednesday, Sen. Murphy and Sen. Richard Blumenthal urged their colleagues to pass Ethan's Law, the Background Check Expansion Act and the Assault Weapons Ban.

All three bills were blocked by Republicans.

According to Blumenthal, 120 people die in the U.S. due to gun violence and 200 people are injured.