Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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(CNN) – Former New York City mayor Rudy Giuliani says police officers should have immediately cracked down on violent protesters in Ferguson.
"They made a terrible mistake in backing off. The first person who throws a stone, the first person who breaks a window, who lights a fire should get arrested. There should be a clear delineation," Giuliani said in an interview with CNN"s "The Lead with Jake Tapper."
The ex-mayor also said well-organized "racial arsonists" incited much of Monday night's violence, and had planned riots days ago.
The protests overnight were a reaction to a grand jury decision to not bring charges against Officer Darren Wilson in the shooting death of unarmed teenager Michael Brown.
There are many who feel there is racial injustice, that a white police officer can kill young black men with impunity.
When pressed whether calling some protesters "racial arsonists" is dismissing a large number of people who simply feel that young black men are treated unfairly, Giuliani acknowledged the right to protest.
"They have every right to be as angry as they want, yell, scream, call names. They even have a right to taunt the police, which they do horribly," Giuliani said.
But they do not have a right to loot and riot, and they "certainly don't have a right to burn down the stores of their very own people," he continued.
Giuliani is also a former federal prosecutor, and said the grand jury decision not to charge Wilson was the right one.
After reading about 200 pages of testimony, "there's no question that they couldn't indict," he said.
For more of our interview with Rudy Giuliani, check out the video above.