About a dozen Tsarnaev supporters cheered as the motorcade arrived. The demonstrators yelled, "Justice for Jahar!" as Tsarnaev is known. One woman held a sign that said, "Free Jahar."
Lacey Buckley said she traveled from her home in Wenatchee, Wash., to attend the arraignment. She said she believes he is innocent. "I just think so many of his rights were violated. They almost murdered an unarmed kid in a boat," she said.
A group of friends who were on the high school wrestling team with Tsarnaev at Cambridge Rindge and Latin waited in line for hours, hoping to get a seat.
One of them, Hank Alvarez, said Tsarnaev was calm, peaceful and apolitical in high school.
"Just knowing him, it's hard for me to face the fact that he did it," said Alvarez, 19, of Cambridge.
Prosecutors say Tsarnaev, a Muslim, wrote about his motivations for the bombing on the inside walls and beams of the boat. He scrawled that the U.S. government was "killing our innocent civilians," and also wrote: "We Muslims are one body, you hurt one you hurt us all."
Martin Richard, 8, Krystle Marie Campbell, 29, and Lingzi Lu, 23, were killed by the two bombs, which were fashioned out of pressure cookers, gunpowder, nails and other shrapnel. Numerous victims lost legs.