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Protesters pour into Baltimore streets after death following man's arrest

  • Protesters stand outside the Baltimore Police Department's Western District police station at the end of a march for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries about a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)

    Protesters stand outside the Baltimore Police Department's Western District police station at the end of a march for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries about a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)  (The Associated Press)

  • Members of the Baltimore Police Department stand behind barriers outside of the Western District police station during a march for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries about a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)

    Members of the Baltimore Police Department stand behind barriers outside of the Western District police station during a march for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries about a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)  (The Associated Press)

  • The Rev. Jamal Bryant leads a rally outside of the Baltimore Police Department's Western District police station during a march and vigil for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)

    The Rev. Jamal Bryant leads a rally outside of the Baltimore Police Department's Western District police station during a march and vigil for Freddie Gray, Tuesday, April 21, 2015, in Baltimore. Gray died from spinal injuries a week after he was arrested and transported in a police van. (AP Photo/Patrick Semansky)  (The Associated Press)

Amid tears and cries for justice, demonstrators poured into the streets of Baltimore carrying signs emblazoned with the name of a man who died from a spinal injury he suffered while in police custody. Tuesday's demonstration marked the beginning of a week of protests and rallies planned across the city.

The Justice Department said earlier in the day that it has opened a civil rights investigation into the death of Freddie Gray, a 25-year-old black man who suffered a fatal spinal-cord injury under mysterious circumstances after he was handcuffed and put in the back of a police van.

At the site of Gray's arrest, more than a thousand demonstrators gathered to remember Gray, who friends and relatives say was kind, funny and generous, and call for police reform.