They will walk down Eighth Avenue from 145th Street to 125th Street in Harlem, handing out literature to raise awareness.
Then, Thursday evening, they'll hold a vigil with the parents of Ramarley Graham at their home in the Bronx.
In February, the unarmed teen was shot dead by an officer who pursued him back to his home in a drug investigation.
Earlier this week, Officer Richard Haste pleaded not guilty to manslaughter charges.
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