Black Lives Matter protester at the annual Conference of Mayors' meeting on Wednesday in Washington DC

Black Lives Matter protester at the annual Conference of Mayors’ meeting on Wednesday in Washington DC

*Black Lives Matter has descended upon the annual U.S. Conference of Mayors’ meeting in Washington D.C., protesting the killing of Chicago teen Laquan McDonald by police, the shooting of Freddie Gray in Baltimore and the lead-tainted water supply of Flint, Michigan.

One protester held a sign that said, “16 Shots & a cover up. #LaquanMcDonald #ResignRahm” while standing in front of Baltimore Mayor Stephanie Rawlings-Blake as she spoke during the meeting’s opening news conference. At least three others in the audience also held up signs.

Watch below:

One protester interrupted Rawlings-Blake shouting, “You failed us!” several times to address the rioting in Baltimore last April over the death of Freddie Gray. Six police officers are facing charges.

Also at the news conference, Flint Mayor Karen Weaver was interrupted by a protester who shouted, “I need some water!”

According to ChicagoBusiness.com, the protest at the mayors’ meeting went on for about 25 minutes, with occasional outbursts and the display of signs. Protesters left without interference with security.

Watch the entire press conference below. (Mayor Weaver takes the mic at about 7:38):