WATCH: Jurors see defiant Tsarnaev in photo, video as feds argue for death

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BOSTON (MyFoxBoston.com/AP) - Jurors looked at a photograph of a defiant Dzhokhar Tsarnaev in court Wednesday as prosecutors began outlining why the Boston Marathon bomber should receive the death penalty.

During opening statements in the penalty phase of Tsarnaev's trial, prosecutor Nadine Pellegrini told jurors the photo showed Tsarnaev "unconcerned, unrepentant and unchanged" after the bombings that killed three people and injured more than 260.

The photo shows Tsarnaev giving the finger to the security camera in his jail cell. It was taken when he was arraigned in court three months after the 2013 bombing. The government called it his message to America.

But the defense played for the jury the actual video, and it showed Tsarnaev tousling his hair, making a sign with two fingers, then quickly his middle finger, all of it in just a few seconds.

In the end, the jury will decide if this is significant.

<<< Click here to see the video >>>

In the meantime, the government continued to put faces on the Marathon case. The brother and step father of slain MIT Police Officer Sean Collier took the stand. They recalled a life of a man who loved the New England Patriots, who always wanted to be a cop.

Joseph Rogers, Collier's step father described the moment he and his wife Kelly saw Collier's lifeless body at the hospital.

"It was devastating. We saw Sean. He had a hole in middle of his head. He was shot to pieces. He wasn't cleaned up. My wife is touching him, and blood is coming up in her hands," he said.

Lingzi Lu's Aunt, Jinyan Zhao, testified how much Lu loved Boston. She told the jury that Lu was buried in a pink bridal princess dress with a tiara, a music box and her favorite books.

Zhao remembers Lu's mother touching her body in the open casket, saying, "Lingzi had beautiful hands, long beautiful hands. Her mother touched her hand. She said, no matter what, I don't want to believe it's her hand."

Survivor Adrianne Haslet-Davis had to relive the moment she lost her leg and nearly bled to death in front of the Forum Restaurant in court Wednesday.

Haslet-Davis broke down as she testified, saying, "I screamed but I couldn't hear myself. I thought, because I couldn't hear myself, I was dead."

Tsarnaev was convicted of all 30 charges against him earlier this month. The same jury must now decide if he spends the rest of his life in prison or is executed.

The trial will continue Thursday morning.