Demonstrators around the country staged die-ins, blocked roadways and marched into stores to protest a New York grand jury’s decision to not indict a white police officer in the chokehold death of an unarmed black man.

Tensions were already running high around the nation because of a grand jury’s decision last week to not indict a white officer in the shooting death of black 18-year-old Michael Brown in Ferguson, Mo. On Wednesday, more protests erupted after a grand jury in New York City decided not to indict a white officer in the chokehold death of Eric Garner, a black man who gasped “I can’t breathe” while he was being arrested for selling loose, untaxed cigarettes.

Hundreds of protesters marched and many briefly laid down in Macy’s flagship store, Grand Central Terminal and an Apple store. They streamed along Fifth Avenue sidewalks and other parts of Manhattan, with signs and chants of “Black lives matter” and “I can’t breathe.”

News outlets reported that demonstrators later blocked traffic on the FDR Drive in Lower Manhattan, spurring arrests. Police didn’t immediately have information on the number arrests.

In Oakland, Calif., hundreds of protesters briefly blocked Interstate 880, a major freeway, on Friday night. There were no immediate reports of any arrests or injuries.

In suburban New York City on Friday, about 65 demonstrators lay down on a street corner in protest. Among them were Jason Walker of Atlanta, in New York for a wedding, and his 3-year-old daughter, Jaidyn. She told her father she wanted to lie down when the demonstrators did, and she lay on the sidewalk for the full 7 minutes, occasionally covering her eyes.

In New Haven, Conn., home of Yale University, hundreds of demonstrators marched Friday from the law school to the courthouse.