Palestinian flag hung from Manhattan Bridge during protest march

NEW YORK (WABC) -- Palestinian supporters unfurled a large flag on the Manhattan Bridge during a solidarity march in Lower Manhattan Wednesday night.

The flag, reading "Gaza, Boycott, Divestment, Sanctions," was hanging on the south side of the bridge so marchers on the Brooklyn Bridge could see it.

"Boycott, Divestment and Sanctions" was a pro-Palestinian campaign that started in 2005 to increase economic and political pressure on Israel.

Marchers were protesting Israel's treatment of the Palestinian people. They marched from Cadman Plaza over the Brooklyn Bridge and to a rally at 1 Police Plaza.

Palestinian activist Linda Sarsour said the banner waved in the evening breeze for up to 45 minutes before New York City police officers took it down.

No one was injured, and the protesters who posted it were nowhere to be found.

The incident took place just one month after artists scaled the Brooklyn Bridge and the replaced the American flags with white flags. It was an act that was widely-acknowledged as a breach of security.

New York City Councilman David Greenfield blasted the NYPD on Twitter for allowing the flag to be unfurled.

"The dropping of another illegal flag on a major NYC bridge leads to the question of whether @NYPDnews is still capable of protecting NYC," he wrote.

But the Palestinian protesters draped their banner from an unrestricted pedestrian walkway, entirely open to the public, 24/7.

No arrests have been made.