Citi’s Manhattan Office Targeted by Climate Protesters (1)

Scores of climate activists gathered outside Citigroup Inc.’s headquarters in downtown Manhattan on Monday, to mark what they say is the beginning of a months-long campaign to try to disrupt operations at the bank.

More than 20 protesters were arrested, according to a spokeswoman for the New York City Police Department. Citigroup employees were still able to enter the building.

A climate activist holds a sign during a protest outside Citigroup headquarters on June 10.

Photographer: Jeenah Moon/Bloomberg

Protesters have dubbed their campaign the Summer of Heat. On a website replete with slogans such as “Hot People Hate Wall St.” and “Eat the Rich,” the authors of the program say their primary goal is ...