Sen. Bernie SandersBernard (Bernie) SandersMellman: On Political Authenticity (Part 2) Former Sanders campaign manager: Don't expect email list to be shared with DNC Adult film star: Trump and Stormy Daniels invited me to 'hang out' MORE (I-Vt.) on Thursday vowed not to let President-elect Donald TrumpDonald John TrumpDems flip Wisconsin state Senate seat Sessions: 'We should be like Canada' in how we take in immigrants GOP rep: 'Sheet metal and garbage' everywhere in Haiti MORE get away with going after minority groups.

"If Donald Trump takes people's anger and turns it against Muslims, Hispanics, African Americans and women, we will be his worst nightmare," the Vermont senator tweeted.

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Sanders on Wednesday released a statement signaling a willingness to work with Trump on certain policies.

“To the degree that Mr. Trump is serious about pursuing policies that improve the lives of working families in this country, I and other progressives are prepared to work with him," the Vermont senator said in a statement released Wednesday.

"To the degree that he pursues racist, sexist, xenophobic and anti-environment policies, we will vigorously oppose him.” 

After battling Hillary ClintonHillary Diane Rodham ClintonIntel Dem decries White House 'gag order' after Bannon testimony 'Total free-for-all' as Bannon clashes with Intel members Mellman: On Political Authenticity (Part 2) MORE in the Democratic presidential primary, Sanders endorsed Clinton and campaigned for her and against Trump in battleground states.

Throughout the presidential race, the Vermont senator made the case for why voters should support Clinton and cast Trump as unqualified for the White House.