Businessman Elon Musk became the world’s first trillionaire last Friday, after his company SpaceX raised $75 billion through an initial public offering on Nasdaq, a price that placed SpaceX’s valuation at $2.1 trillion. The IPO also made millionaires of over 4,000 current and former SpaceX employees, facts which most Americans celebrated.

But not Democrats. Sen. Elizabeth Warren (D-MA) said the moment “needs to be a wake-up call,” claiming that Musk’s wealth is “a feature of a rigged economy.” Maine Senate candidate Graham Platner went even further, posting on social media that, “Elon Musk just became the world’s first trillionaire. Let’s make sure he’s also the last.”