Rep. Alexandria Ocasio-Cortez (D-NY) warned the Democratic Party establishment Friday that supporters of the socialist Green New Deal are now “in charge.”

“If you don’t like the #GreenNewDeal, then come up with your own ambitious, on-scale proposal to address the global climate crisis,” Ocasio-Cortez said in a social media post.

“Until then, we’re in charge – and you’re just shouting from the cheap seats”:

Yup. If you don’t like the #GreenNewDeal, then come up with your own ambitious, on-scale proposal to address the global climate crisis. Until then, we’re in charge – and you’re just shouting from the cheap seats. https://t.co/h3KSJhHqDN — Alexandria Ocasio-Cortez (@AOC) February 23, 2019

Ocasio-Cortez’s tweet came after Sen. Dianne Feinstein (D-CA) was confronted by a group of school children and teenage activists who urged her to support the Green New Deal.

Video of the confrontation went viral on social media, and the activist group, Sunrise Movement, accused her of treating them with “smugness” and “disrespect”:

This is how @SenFeinstein reacted to children asking her to support the #GreenNewDeal resolution — with smugness + disrespect. This is a fight for our generation's survival. Her reaction is why young people desperately want new leadership in Congress. pic.twitter.com/0zAkaxruMI — Sunrise Movement 🌅 (@sunrisemvmt) February 22, 2019

“You come in here, and you say it has to be my way or the highway. I don’t respond to that,” the California Democrat told the group, also saying that others should “listen a little bit.”

The Green New Deal proposes a major restructuring of the entire United States economy with the goal of reversing climate change.

Among other things, the plan seeks to guarantee the “economic security” of people “unwilling to work” and replace every combustion-engine vehicle.

President Trump has mocked the Green New Deal, saying, “It sounds like a high school term paper that got a low mark.”