On a bustling corner of Brighton Beach Avenue in Brooklyn beams a sign of the times: Tashkent Supermarket.

The cavernous store opened five months ago in this Russian enclave to serve the growing community from Uzbekistan. Over Halal meat, and a steaming buffet of plov and kebabs, recent and older immigrants alike shook their heads in disgust over the terrorist attack in Manhattan on Halloween.

“I can’t even discuss what he did,” Aziz Rashidov, 28, said in Uzbek, as he tended to the buffet last Friday. He added in Russian, “Something is not right in the head.”

The “he” Mr. Rashidov was referring to was Sayfullo Saipov, the 29-year-old Uzbek immigrant who is accused of plowing into a crowd of people on a popular bike path in Lower Manhattan on Tuesday and killing eight people and injuring 12 in what the authorities called a deliberate act of terrorism.