WATCH: Rudy Giuliani Republican National Convention Speech

Rudy Giuliani, the former Mayor of New York who held the office during the terrorist attacks on September 11, 2001, spoke at the Republican National convention in Cleveland Monday night. The speech, like many others on the night, focused on America’s security since the theme was “Make America Safe Again.” He began with a tribute to police officers.

“What I did in New York, Donald Trump will do for America,” Giuliani told the crowd. Giuliani also spent time assuring the audience that Trump cares for everyone. He said that Trump made anonymous donations after the September 11 attacks.

Giuliani endorsed Donald Trump in an April interview on CNN. However, he refused to take part in Trump’s campaign.

“I’m Rudy Giuliani, I mean a lot in New York politics, I endorse Donald Trump, but I’m not a part of the campaign,” Giuliani told CNN. “I’m not a part of the campaign apparatus and I don’t want people to think I am.”

Giuliani also attracted controversy on July 8 with his reaction to the shooting in Dallas. He suggested that African-American children should be taught that other African-American children are dangerous.

“Let’s teach everyone including the children of the black community that most of those police officers are the reason you’re alive,” Giuliani said. “Because the real danger to you is that black kid who is going to shoot you on the street because that happens many, many more times than police officers. Lets talk about it honestly.”

He also said that protests, like the ones organized by Black Lives Matter, create “divisiveness and anti-police rhetoric.”