A co-founder of social media giant Facebook, Dustin Moskovitz said he was donating $20 million to help ensure the defeat of Republican candidate Donald Trump in the upcoming presidential elections.
Moskovitz, a Harvard roommate of Mark Zuckerberg who was part of the founding group of the social networking giant, said he and his wife Cari made the decision to pour in millions because "polarization in America today has yielded a race that is about much more than policies and ideas."
"If Donald Trump wins, the country will fall backward, and become more isolated from the global community," the American internet entrepreneur said in a blog post titled 'Compelled to Act' on Friday.
"The Republican Party, and Donald Trump in particular, is running on a zero-sum vision, stressing a false contest between their constituency and the rest of the world," he wrote.
The 32-year-old multi-billionaire said the real-estate magnate's policy proposals were "so implausible" that they spark concern his White House run may be nothing more than a con game aimed at winning the election and boosting his brand.
Moskovitz said Trump's signature plan to build a wall on the US-Mexico border, which purports to "improve the lives of Americans, would in practice hurt citizens and noncitizens alike."
"So, for the first time, we are endorsing a candidate and donating. We hope these efforts make it a little more likely that (former Secretary of State Hillary) Clinton is able to pursue the agenda she has outlined," the Facebook co-founder said in the post, which was also signed by his wife, Cari Tuna.
The November 8 presidential election has become a "referendum on who we want to be as individuals, as a nation and as a society," Moskovitz said.
He added that he hoped his support for the Democratic Party sends a message to the Republicans that "by running this kind of campaign - one built on fear and hostility - and supporting this kind of candidate, they compel people to act in response."
The Facebook co-founder said that, despite "reservations about anyone using large amounts of money to influence elections," he and his wife were committing $20 million to numerous organisations, including the Hillary Victory Fund, the Democratic Senatorial Campaign Committee and the Democratic Congressional Campaign Committee.