"This is what climate change looks like: it hits vulnerable communities first," Ocasio-Cortez tweeted on Tuesday.
Dorian's punishing winds and torrential rain battered the islands of Abaco and Grand Bahama, which have a combined population of about 70,000 and are known for their marinas, golf courses, and all-inclusive resorts.
The Grand Bahama airport was under 6 feet of water and at least five deaths were reported.
The freshman New Yorker dismissed "climate deniers" who claim the latest hurricane has nothing to do with climate change.
"I can already hear climate deniers screeching: 'It’s always been like this! You’re dim,' etc. No. This is about science & leadership," Ocasio-Cortez wrote. "We either decarbonize & cut emissions, or we don’t & let people die."