Incoming Dem lawmaker fires back at Trump's former economic adviser: ‘No Gary, YOU don't know what's coming’

Rep.-elect Rashida TlaibRashida Harbi TlaibIsrael boycott fight roils Democrats in year-end spending debate Liberal groups launch effort to get progressives on key House committees Democrats must stand up for Israel MORE (D-Mich.) on Thursday shot back at former Goldman Sachs CEO Gary CohnGary David CohnOcasio-Cortez rips presence of lobbyists at orientation event Incoming Dem lawmaker fires back at Trump's former economic adviser: ‘No Gary, YOU don't know what's coming’ Ocasio-Cortez criticizes congressional orientation program for featuring CEOs over labor leaders MORE for comments he made while addressing new members of Congress at Harvard Kennedy School's Institute of Politics.

Cohn, who resigned as President TrumpDonald John TrumpREAD: Transcript of James Comey's interview with House Republicans Klobuchar on 2020: ‘I do think you want voices from the Midwest’ Israel boycott fight roils Democrats in year-end spending debate MORE's top economic adviser in March, was among several speakers during a bipartisan orientation program this week at Harvard.

Tlaib said on Twitter that Cohn told incoming lawmakers: “You guys are way over your head, you don't know how the game is played.”

“No Gary, YOU don't know what's coming - a revolutionary Congress that puts people over profits,” Tlaib tweeted.

The orientation at Harvard has been dubbed by the university as an event where newly elected lawmakers can “learn practical skills of lawmaking just one month prior to taking the oath of office.”

In addition to Cohn, speakers included Mary Barra, the chairman and CEO of General Motors, and Arthur Brooks, president of the right-leaning American Enterprise Institute.

Rep.-elect Alexandria Ocasio-CortezAlexandria Ocasio-CortezOcasio-Cortez had highest percentage of small donors in midterms: report Ocasio-Cortez eyeing Jeffries as 2020 target: report Hillicon Valley: Report accuses tech giants of hindering Russia probe | NAACP leads protest against Facebook | Trump, Congress head for clash on Huawei | Security panel clears T-Mobile, Sprint deal | Google plans B NYC expansion MORE (D-N.Y.) voiced criticism of the event on Thursday, saying their were several corporate CEOs but no labor leaders in attendance.

Tlaib, a former Michigan state representative, defeated five other candidates in Michigan's Democratic primary earlier this year and ran unopposed in November. She has championed policy efforts such as "Medicare for all" and a $15 minimum wage.