Over the last year and a half, it's been Donald Trump who has dominated social media. While the president-elect is usually the one who lashes out on Twitter, this time it was Sen. Bernie Sanders who decided to get in on the action.

Bernie blasts back

Just days after Donald Trump defeated Hillary Clinton to become the new president-elect, he vowed to be "very restrained" in his use of social media. However, Trump has not kept true to his word, as he's gone on several tirades and rants, setting his sights on multiple targets.

From the cast of "Saturday Night Live" and the musical "Hamilton," to a union leader, CNN, and the entire country of China, the billionaire real estate mogul has shown that no one is safe from his potential criticism. As seen on his offical Twitter account on December 9, Bernie Sanders is now the one using social media to voice his opposition to the future president.

When the news broke that Donald Trump had picked Gary Cohn, the president of Golden Sachs, to be one of his top economic advisors, the backlash from the left came quick.

After promises to "drain the swamp" of Washington insiders and Wall Street money men, the former host of "The Apprentice" has been under fire for some of his controversial cabinet and administration additions. "It's called a rigged economy and this is how it works," Bernie Sanders wrote on Twitter in response to the news.

The senator from Vermont has long been a critic of Donald Trump, dating back to the time when the president-elect first announced his candidacy for president.

Even after losing in the Democratic primary to Hillary Clinton, Sanders would continue to lash out at Trump. During an interview with MSNBC's Chris Hayes on Thursday night, Sanders referred to Trump as a "pathological liar."

Moving forward

Despite the criticism against him, Donald Trump is less than six weeks away from being sworn in as the next President of the United States. With Inauguration Day right around the corner, Trump will continue to sit down with his transition team to fill out the rest of his cabinet, with the Secretary of State job still vacant.

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