Homeland Security police officers keep watch along Pennsylvania Avenue a day after the Boston Marathon bombings. Ayo Handy-Kendi (left) and others wear chains to show their opposition to the District not having a voting representative in Congress.

Homeland Security police officers keep watch along Pennsylvania Avenue a day after the Boston Marathon bombings. Ayo Handy-Kendi (left) and others wear chains to show their opposition to the District not having a voting representative in Congress.