“Unlike Donald Trump and the [Republican National Committee], our campaign will not be using disinformation tactics to engage voters,” said Sabrina Singh, a spokesperson for Bloomberg.

But taken together, Bloomberg’s moves are testing the boundary between edgy campaign fare and disinformation, as well as the limits of regulated political advertising, an array of nonpartisan technology experts tracking the 2020 candidates’ online efforts told POLITICO. And it risks leading Democrats into perilous, anything-goes territory in the brave new world of online campaigning, they said.

“This is absolutely dangerous for the fair functioning of our political process,” Dipayan Ghosh, co-director of digital platforms and the Democracy Project at the Harvard Kennedy School, said of the video and tweets posted by Bloomberg. “And it could very well send the Democrats down the slippery slope of disinformation.”