Victims and survivors berate Dzhokhar Tsarnaev at his sentencing for Boston Marathon bombing

BOSTON – Boston Marathon bomber Dzhokhar Tsarnaev returned to court Wednesday to be formally sentenced to death and listened as victims and their loved ones came forward one by one to berate him for his “cowardly” and “disgusting” acts.

“He can’t possibly have had a soul to do such a horrible thing,” said Karen Rand McWatters, who lost a leg in the attack and whose best friend, 29-year-old Krystle Campbell, was killed.

Campbell’s mother, Patricia Campbell, was the first person to address the court. She looked across the room at Tsarnaev, seated about 20 feet away, and spoke directly to him.

“What you did to my daughter is disgusting,” she said. “I don’t know what to say to you. I think the jury did the right thing.”

About 30 people were expected to speak at the sentencing in federal court. The outcome was a foregone conclusion: U.S. District Judge George O’Toole Jr. was required under law to impose the jury’s death sentence for the April 15, 2013, attack that killed three people and wounded more than 260.

The only real suspense was whether Tsarnaev would say anything when given a chance to speak near the end of the proceedings. Tsarnaev, 21, has said almost nothing in court since his arrest more than two years ago, offering neither remorse nor explanation.

McWatters, Campbell’s best friend, urged Tsarnaev to show remorse to discourage other jihadis from killing people in similar attacks.

“You can save them from these cowardly acts if you really have an ounce of regret or remorse,” she said.

In May, the jury condemned the former college student to die for joining his older brother, Tamerlan, in setting off the two pressure-cooker bombs near the finish line and in killing an MIT police officer as they fled. Tamerlan, 26, was killed during the getaway.

Tsarnaev wore a dark sport jacket with a collared shirt and no tie Wednesday. He appeared impassive as he chatted with his lawyers before the start of the hearing.

Several victims condemned Tsarnaev for coming to the U.S. as an immigrant, enjoying the benefits of living here and then attacking American citizens.

“He is a leech abusing the privilege of American freedom, and he spit in the face of the American dream,” said Jennifer Rogers, an older sister of slain MIT Officer Sean Collier.

Bill Richard, whose 8-year-old son Martin was the youngest person killed in the bombing, said Tsarnaev could have backed out of the plot and reported his brother to authorities.

Instead, Richard said, “He chose hate. He chose destruction. He chose death. This is all on him.”

Tsarnaev, seated between his lawyers, looked down as Richard spoke.

Richard noted that his family would have preferred that Tsarnaev receive a life sentence so that he could have had “a lifetime to reconcile with himself what he did that day.”

Richard said his family has chosen love, kindness and peace, adding: “That is what makes us different than him.”

Tsarnaev’s lawyers admitted he participated in the bombings but argued that Tamerlan was the driving force in the plot.

In a message he scrawled in the boat he was found hiding in, Dzhokhar Tsarnaev said the attack was retaliation against the U.S. for its wars in Muslim countries.

Several victims Wednesday described psychological injuries invisible to the world, but all too real and debilitating to them.

Scott Weisberg, a 45-year-old family physician from Birmingham, Alabama, said he finished running his first Boston Marathon three seconds before the first bomb exploded. He suffered hearing loss in both ears and a traumatic brain injury, and has been diagnosed with post-traumatic brain injury.

He said his once-successful medical practice is now struggling and he is in the midst of a divorce “because my spouse cannot grasp the trauma this has inflicted on me and my family.”

“I wish the world could take my place for one day and see what it’s like to appear normal on the outside and have so many day-to-day problems on the inside,” Weisberg said.