Democratic presidential candidate Joe Biden. Photo: Ethan Miller/Getty Images

Democratic presidential front-runner Joe Biden told CNN's Anderson Cooper Monday he would "institute a national buyback program" if elected in 2020 to get assault weapons off the streets.

The big picture: The former vice president made the pledge in response to mass shootings in El Paso, Texas, and Dayton, Ohio. Biden said he would push for background checks and reinstitute the assault weapons ban that he helped push through in 1994 but was unable to later reauthorize, the Washington Post notes.

  • Biden did not label President Trump a racist, as other 2020 candidates have in the wake of last weekend's shootings, but he told Cooper the president is playing a "dangerous game" by using incendiary language about immigrants. An anti-immigrant screed apparently uploaded by the El Paso suspect appeared online just before the shooting.

Go deeper: Where 2020 Democrats stand on gun control

Go deeper

The end of Hong Kong's political freedom is here

Illustration: Annelise Capossela/Axios

The end of Hong Kong's relatively free political system is no longer looming. It's here.

Why it matters: The Chinese Communist Party is already wielding the new national security law it forced upon Hong Kong just over a month ago.

  • And through the extraterritoriality enshrined in the new law, Beijing has signaled that its push against pro-democracy activism is going global.

First look: New Trump ad doubles down on radical left frame for Biden

Combination images of President Trump and Joe Biden. Photo: Scott Olson/Getty Images/Mark Makela/Getty Images

The Trump campaign launches a new ad Tuesday in five early-voting states that hits Joe Biden on taxes and immigration, redoubling a strategy to paint the Democratic nominee as a tool of the radical left.

Driving the news: "In His Own Words" will be a "high seven figure" spend running in Florida, Arizona, North Carolina, Georgia and Wisconsin, a senior campaign official tells Axios.

34 mins ago - Health

Axios-Ipsos poll: 1 in 2 has a personal connection to the virus

Data: Axios/Ipsos poll; Chart: Danielle Alberti/Axios

We've hit a tipping point in the pandemic: Half of Americans now know someone who's tested positive, according to this week's installment of the Axios-Ipsos Coronavirus Index.

Why it matters: In practical terms, this data shows it's everybody's problem now.