A group of New York mothers whose sons and relatives have lost their lives in police altercations says Gov. Andrew Cuomo has agreed to meet with them to discuss their concerns - but he keeps cancelling their meetings.

"With us it's always a delay," says Constance Malcolm, whose son, Ramarley Graham, was unarmed when he was shot and killed by a police officer in 2012. "And we don't know what it is, and I just feel like he's not taking us seriously and to be honest he's not taking black lives seriously."

Malcolm says she and others took off from work Friday to meet with Cuomo in Manhattan, but he canceled their meeting for the second time.

The mothers group would like to see Cuomo appoint a special prosecutor for cases involving suspected abuses of police power because local district attorneys may be reluctant to prosecute officers, Malcolm says.

The governor's office tells News 12 it is working to confirm a new date for the meeting.

Ramarley Graham would have been 22 years old on Sunday.