Cyril Josh Barker | 4/12/2011, 4:39 p.m.
Not even the sound of African drums could drown out the screams that Shem Walker's...

Elected officials, including Councilwoman Letitia James and Assemblyman Hakim Jeffries, gave words during the service, vowing to use their positions to get justice. Jeffries said Walker would be alive if the NYPD had never trespassed on his mother's property.

"We've met with the district attorney's office, which has indicated that [the DA is] going to move forward in an expeditious fashion," said Jeffries. "We expect him to conduct a full, impartial investigation which I hope will result in a grand jury inquiry."

This past Sunday, Jeffries led a prayer vigil outside of the Walker home on Lafayette Avenue. Kirsten John Foy of the National

Action Network and several Central Brooklyn ministers joined him.

James said based on the 20 people on Lafayette Avenue she spoke to who were near the incident, the police officer did not identify who he was.

"Mr. Walker was defending the property of his mother. The reality is that a number of residents on Lafayette Avenue indicated to me that he did not want anyone drug dealing on his mother's property," she said.

Walker was buried at the Evergreen Cemetery in Brooklyn on Tuesday. He leaves behind his wife, two daughters, Shavone and Shemika, and two stepsons, Robert and Richard. Shemika is reportedly scheduled to be redeployed Iraq for a second tour.