At New York's Foley Square, surrounded by court buildings, Ramarley Graham's mother delivered a petition with 33,000 signatures on Wednesday to demand the Justice Department and U.S. Attorney's Office conduct a federal investigation into the fatal police shooting of her unarmed black teenage son.

Ramarley Graham was killed on Feb. 2, 2012, when an officer from a special narcotics unit chased him to his home because officers investigating a drug deal believed Graham had a gun in his waistband. Officers entering the home without a warrant, and officer Richard Haste fatally shot the teen once in the chest in the bathroom. Police say they recovered a small bag of marijuana in the toilet. No weapon was found.

"My son was unarmed and murdered by a NYPD officer who busted into our home with no warrant and shot him in front of his 6-year-old brother and grandmother," said Constance Malcolm, the mother of Ramarley Graham. "If that's not a blatant violation of civil rights, then the Justice Department might as well close its civil rights division because it is allowing open season on our communities. President Obama, Attorney General Holder and Preet Bharara must decide whether they are going to uphold justice and the civil rights of people of color in this country and show that our lives are valued equally by the justice system. I'm not asking for favors, simply blind justice."

Constance Malcolm wants Attorney General Eric Holder and U.S. District Attorney Preet Bharara to open a full federal investigation, convene a grand jury and meet with the family.

In this case, there was an initial indictment for manslaughter against Haste, but the case was dismissed in May 2013 after the Bronx Supreme Court Justice Steven Barrett ruled a Bronx District attorney assistant made an error. Bronx District Attorney Robert Johnson brought the case before a second grand jury in August, where Haste was not indicted by the jury. After the decision, the U.S. Justice Department announced that it would review whether Haste violated Graham's civil rights in the shooting death; the review is still pending. And a year later, the Graham family has received no indication that the DOJ has moved from "review" to a full investigation.

In April, the chairs and members of the NYS Black Puerto Rican, Hispanic & Asian Legislative Caucus, and the New York City Council Black, Latino & Asian Cucaus sent letters to Attorney General Eric Holder requesting an official investigation by the Department of Justice into the death of Ramarley Graham.

"Based on the facts that we already know, it is clear that the death of Ramarley Graham necessitates further investigation by the Department of Justice," said New York State Assemblyman Karim Camara, chair of the Black, Puerto Rican, Hispanic & Asian Legislative Caucus. "Further, the alleged gun that was never discovered and the callous manner which the family alleges they were treated by the NYPD are aspects of this case that are still not entirely understood. We owe it to Ramarley and his family as well as all young men of color who see their civil rights violated far too often that this tragedy is not forgotten and that justice is done."

The petition request comes when police departments across the United States are under increased scrutiny following the deaths of Eric Garner and Michael Brown.

A large rally is planned for Saturday in Staten Island with "justice" buses traveling from other states to demand an indictment in the Eric Garner case.

This comes just two weeks since six mothers, including Constance Malcolm, of family members killed by the NYPD over the past two decades met with the NYPD Inspector General.