PHILADELPHIA Former Rep. Gabby Giffords, who was shot in the head during a massacre five years ago, addressed the Democratic National Convention Wednesday, saying presidential nominee Hillary Clinton will push to reduce gun violence.

“Hillary is tough. Hillary is courageous. She will fight to make our families safer. In the White House, she will stand up to the gun lobby,” Giffords said.

Giffords headlined a gun control rally in Philadelphia Tuesday and her political action committee, Americans for Responsible Solutions, threw a party featuring the performer Kesha.

Clinton supports strengthening gun laws, including requiring universal background checks for firearms purchases and making it illegal for domestic abusers to buy guns.

Giffords sustained a severe brain injury when a shooter, who murdered six other people, tried to assassinate her during a public appearance at a grocery store in 2011.

“Speaking is difficult for me. But come January, I want to say these two words: ‘Madame President,'” Giffords said.