A group of fourth-graders was told to "go back to Mexico" after winning a robotics competition in Indianapolis. It was the Pleasant Run Elementary School team's first time competing at the science fair; the low-income school had just been given a grant to develop a robotics program for the first time a few months ago, USA Today reports. After the team was awarded first place, they were reportedly showered with racist slurs by rivals and parents. The team consists of three Latino and two black students.

"I'm not surprised," said the team's 10-year-old captain, Elijah Goodwin, " because I'm used to this type of behavior." The Week Staff

Billionaire Tom Steyer's path to the presidency ended where he hoped it would really begin.

Steyer announced Saturday night that he's dropping out of the Democratic presidential race. He had his strongest primary performance Saturday in South Carolina, where he's on pace to finish in third place behind former Vice President Joe Biden and Sen. Bernie Sanders (I-Vt.), but his aggressive campaigning in the state ultimately didn't achieve the results he was seeking.

With 86 percent of the vote in, Steyer has 11.4 percent support. "There's no question today that this campaign, we were disappointed with where we came out," he said. "But I said if I didn't see a path to winning that I'd suspend my campaign, and honestly I can't see a path where I win the presidency."

He spent more time in South Carolina than any other candidate in the hopes of chipping away at Biden's base, which included the majority of the state's African American voters, but the vice president retained the support he needed to emerge victorious. Read more at NPR and CNN. Tim O'Donnell

Former Vice President Joe Biden took what might have been a not-so-subtle shot at Sen. Bernie Sanders (I-Vt.) during his victory speech after winning the South Carolina Democratic presidential primary Saturday.

Biden's talking points mostly had to do with continuing the legacy of former President Barack Obama and defeating President Trump in November, but he also said — without mentioning Sanders or any other Democratic candidate by name — that the victory showed Democratic voters "want a nominee who's a Democrat." Sanders, of course, considers himself a democratic socialist and is technically an independent outside of his presidential runs.

The vice president also said he believes "most people don't want the promise of a revolution, they want results," another apparent dig at the senator who appears to now be his primary competitor.

Biden's speech received some praise from observers, many of whom pointed out that winning appears to be a cure-all for struggling campaigns. Tim O'Donnell

Former Vice President Joe Biden was quickly declared the South Carolina Democratic presidential primary winner even as votes continue to roll in Saturday night, and he owes his victory in large part to the state's African American voters.

More than half of South Carolina's Democratic voters this year were black, and among the demographic the vice president received a whopping 64 percent support rate. Sen. Bernie Sanders (I-Vt.) was closest at 15 percent.

This is no surprise for Biden who — despite his struggles in the three previous early voting states — has long been counting on South Carolina's African American voters to back him Saturday.

The vice president did well in most exit poll categories, per CNN, though Sanders fared better with younger voters, as he normally does. Turnout numbers will help tell the full story.

Biden also received more votes from people who made their choice based on issues and those who are prioritizing beating Trump in November. Check out more exit poll numbers at CNN. Tim O'Donnell

It's taken former Vice President Joe Biden 33 years and three separate shots at the Democratic nomination, but he's finally won a Democratic presidential primary. Biden has been projected by multiple outlets to win Saturday's South Carolina Democratic presidential primary almost immediately after polls closed at 7 p.m. E.T.

With almost 90 percent of the votes accounted for, Biden has reeled in 48.4 percent of the electorate, well ahead of Sanders who comes in at 19.9 percent. Billionaire Tom Steyer is in third with 12 percent. Biden, so far, is the only candidate with any pledged delegates at 14.

The state was considered a crucial one for the vice president, who faded in the Iowa caucuses and New Hampshire primary before finishing a distant second to Sen. Bernie Sanders (I-Vt.) in the Nevada caucuses earlier this month. Biden's campaign considered South Carolina the candidate's firewall, so the victory looks like it will serve as a much needed boost going into Super Tuesday.

Exit polls are showing that Biden's win was reportedly strongly aided by African American voters and voters aged 45 and older.

This is a developing story and will be updated. Tim O'Donnell

President Trump on Saturday gave one of his patented meandering speeches at the Conservative Political Action Conference in Washington. He spent a lot of time touting the achievements of his administration and criticizing the media and the Democratic Party, saving some special shoutouts for his potential presidential opponents.

Trump mostly dismissed Sen. Elizabeth Warren (D-Mass.), Sen. Amy Klobuchar (D-Minn.), and former South Bend, Indiana, Mayor Pete Buttgieg, saying he views them as non-threats, but he did take an informal poll of the audience to gauge whether his supporters would rather take on Sen. Bernie Sanders (I-Vt.) or former Vice President Joe Biden in November. The crowd's roaring indicated they're hoping he faces off with the former.

Trump suggested Sanders might be a communist, but admitted Biden is more moderate. He said the problem with the 77-year-old Biden is that he won't actually be capable of leading the country and will instead "be sitting in a home some place."

But even that pales in comparison to the mockery Trump saved for another candidate — billionaire and former New York City Mayor Michael Bloomberg. As he often does, Trump made fun of Bloomberg's height, and the crowd apparently couldn't get enough of it, as the routine led to a chant of "four more years." Tim O'Donnell

It's the South Carolina primary, but Sen. Bernie Sanders (I-Vt.) has his sights set on Massachusetts.

While many other candidates remain in the Palmetto State, Sanders flew north Friday evening and held a Saturday rally in Boston. Massachusetts is a Super Tuesday state, so the timing checks out, but Sanders' presence there is notable primarily because it's the home state of Sen. Elizabeth Warren (D-Mass.), his closest ideological competitor in the race.

There's not a lot of data on Massachusetts, but some polls hint at a tight race between the two New Englanders, per The New York Times.

Warren, who struggled this month in neighboring New Hampshire, on Saturday declined to call Massachusetts a must-win state, despite serving as its senator, and said she isn't surprised Sanders is campaigning there because it's a "very progressive state and progressive ideas are very popular." But the Sanders campaign may also have zeroed in on Massachusetts precisely because a victory could result in, as the Times describes it, a "symbolic blow" to Warren's once-promising campaign. Read more at The New York Times. Tim O'Donnell