UPDATED: November 25, 2014 4:50 p.m.

WASHINGTON(WNEW/AP) — Protests are being held all day Tuesday in the nation’s capital and Baltimore in the wake of a grand jury’s decision not to indict a white police officer who killed a black 18-year-old in Ferguson, Missouri.

Protestors were seen holding “die-ins” throughout D.C. Tuesday afternoon:

The Black Youth Project 100 is occupying various buildings over a 28-hour period.

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They’re calling for an end to police brutality and the return of a review board run by citizens.

The group demonstrated a “die-in” on the steps of MPD headquarters Wednesday morning.

(Photo Credit: John Domen/All News 99.1)

(Photo Credit: John Domen/All News 99.1)

Protests in Baltimore started around 4 p.m. at McKeldin Square.

Mayor Stephanie Rawlings-Blake released this statement to encourage peaceful protests in the Charm City:

While I understand the frustration of those saddened by the grand jury’s decision in Ferguson tonight, it is important to remember that the best way to honor Michael Brown’s memory is through peaceful protest and constructive dialogue. In Baltimore, we will support the rights of those residents who choose to demonstrate peacefully and work to ensure resident safety as they exercise their first amendment rights. I will also do my part to ensure Baltimore remains on the right path toward building more trust between the community and our police officers, as is evident from the work we have done together to recruit a reform-oriented program to the City in partnership with the Department of Justice, reductions in the number of excessive force lawsuits filed, and the eventual implementation of a police body camera program that will provide additional transparency and accountability.

One person tweeted how Howard University was observing the Ferguson grand jury decision:

D.C.’s main protest is planned for 7 p.m. at Mount Vernon Square in Northwest.

Outside the White House Monday, dozens of people waved signs and chanted “justice for Michael Brown” after marching through the streets.

In downtown Baltimore, the Baltimore People’s Power Assembly is planning an “emergency response protest” in McKeldin Square at 4 p.m., followed by a march past the federal building. Another group is planning to march on Baltimore City Hall at 6 p.m.

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WNEW’s John Domen contributed to this report. Follow him and WNEW on Twitter.

(TM and Copyright 2014 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2014 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)