Now playing Next USA Facebook's new rapid response team has a crucial task: Avoid fueling another genocide
Now playing Next USA Trump: 'Iran made a very big mistake!' The president tweeted the assessment ahead of a White House meeting following the downing of a U.S. military drone, amid escalating tensions between the two nations. 20/06/2019
Now playing Next USA Supreme Court allows huge cross to remain on public land The ruling reverses a lower court decision on the 40-foot high war memorial in suburban Washington, D.C. 20/06/2019
Now playing Next USA Biden has long viewed a war in Iran without Congress' approval as impeachable Joe Biden's presidential campaign says his views haven't changed, but his 2007 remarks also show a more cautious view of impeachment in general. 20/06/2019
Now playing Next USA Democratic candidates find their outrage scale is different from Trump's First Read is your briefing from "Meet the Press" and the NBC Political Unit on the day's most important political stories and why they matter. 20/06/2019
Now playing Next no comment The 'Mad Hatter Gin & Tea Party' lands in Hollywood Guests must choose a hat, the more flamboyant the better, and listen for instructions from the 'Cheshire Cat' before they are allowed into the tea party. 20/06/2019
Now playing Next USA Sex toy maker sues NYC transit for refusing their ads, allowing erectile dysfunction ads Dame Products alleges the New York City MTA discriminated against their ads while allowing phallic art promoting impotency medication. 20/06/2019
Now playing Next USA Glaciers on the Himalayas are melting fast, spy images reveal The region called "The Third Pole" because it has so much ice is melting at twice the rate it was before the year 2000, a recent study revealed. 20/06/2019
Now playing Next no comment Street art transforms a district of Bolivia capital, La Paz The residents-turned-painters are guided by four urban artists and about 50 masons 20/06/2019
Now playing Next USA Surf's up, skis down: How climate change is affecting sports Extreme weather is affecting summer and winter sports alike — mostly for the worse. 20/06/2019
Now playing Next USA What is 'Medicare for All' and how would it work? The far-reaching health care plan has touched off a fierce debate. Here's a breakdown of what exactly it is and which candidates are for, against or lukewarm on it. 20/06/2019
Now playing Next USA Syrian refugee charged with plotting to bomb Pennsylvania church Mustafa Mousab Alowemer, 21, recorded a video of himself pledging an oath of allegiance to the leader of ISIS, court documents say. 20/06/2019
Now playing Next world news David Ortiz was not the intended target of murder plot, officials say The intended target was a friend of Ortiz who was sharing a table with the baseball star at the time, the attorney general of the Dominican Republic said. 20/06/2019
Now playing Next USA Military official says no U.S. drones in Iranian airspace after report of downed aircraft "No U.S. drone was operating in Iranian airspace today," a spokesman for Central Command said, after an Iranian report a U.S. drone was shot down. 20/06/2019
Now playing Next USA NASA wants robots to sniff out moon pits for lunar habitats The sinkhole-like structures might contain valuable resources or provide shelter for astronauts. 19/06/2019
Now playing Next USA Bernie Sanders lashes out at Donald Trump as presidential race hots up As the race for the Democratic nomination for the 2020 US presidential election hots up, Bernie Sanders didn't pull any punches as he lashed out at Donald Trump 19/06/2019
Now playing Next USA GOP senator wants to remove a key legal protection for tech giants Sen. Josh Hawley's bill would change how big tech platforms like Facebook, YouTube and Twitter are offered immunity from liability for users' content. 19/06/2019
Now playing Next USA These 'cyborg' plants can sense motion and move on command Researchers foresee a world in which plants collect and transmit information without computers' glaring screens or intrusive sounds. 19/06/2019
Now playing Next USA After fatal police shooting, Buttigieg expresses concern about minority relations The South Bend mayor and 2020 contender ordered the city's bod cam policy for officers changed in the wake of the killing. 19/06/2019
Now playing Next USA Watch: Yoko Ono refugee boat installation goes on display Visitors are invited to paint their thoughts and feelings about immigration on and around the boat. 19/06/2019
Now playing Next no comment Yoko Ono refugee boat installation goes on display in New York Visitors are invited to paint their thoughts and feelings about immigration on and around the boat. 19/06/2019
Now playing Next USA San Francisco moves closer to ban on e-cigarettes San Francisco has outlawed the sale of e-cigarettes until the United States Food and Drug Administration completes a review of the health effects. 19/06/2019
Now playing Next USA Dominican officials arrest 11th suspect in David Ortiz case Authorities say they are looking for at least three other suspects, including the man they believe paid the hit men. 19/06/2019
Now playing Next USA Hope Hicks testifies before House committee behind closed doors Democrats on the House Judiciary Committee planned to focus their questions in part on what they say are obstruction of justice crimes established by the Mueller Report against President Trump. 19/06/2019
Now playing Next USA Trump leans on his greatest hits in campaign kickoff First Read is your briefing from "Meet the Press" and the NBC Political Unit on the day's most important political stories and why they matter. 19/06/2019
Now playing Next USA U.S. says tanker attack mines bear 'striking resemblance' to Iranian devices Officials say they also found "biometric information" including a hand print on the side of the ship, which "can be used to build a criminal case." 19/06/2019
Now playing Next USA Biden cites segregationist senators as he recalls past 'civility' in Senate "At least there was some civility," Biden said at a New York fundraiser. "We got things done. We didn't agree on much of anything. We got things done." 19/06/2019