A combative Democratic debate saw clashes on race and healthcare policy – and many more attacks on Trump. Our experts weigh in Kate Aronoff: Democrats – and America – need better than BidenJoe Biden has been running for president on the idea that he’s the best equipped to beat Donald Trump. Tonight’s debate shed considerable doubt on that premise. If this is how he performs against his opponents on the same side of the aisle – clinging desperately to the legacy of an administration he didn’t lead – then how do we think he’ll fare against the most talented bully in American politics?Other candidates performed impressively. Bernie Sanders had the clearest ideas on how to improve the lives of people in this country and take on vested interests hoarding wealth and power. But Kamala Harris delivered the night’s and possibly the cycle’s most powerful moment when she challenged Biden on his history of supporting racist policies and politicians. In response, he got as defensive as a grandfather going up against his kids at a Thanksgiving table, taking pains to clarify precisely which type of desegregation he opposed in the 1970s. America deserves better. * Kate Aronoff is a writing fellow at In These Times. She covers elections and the politics of climate change Art Cullen: One of the real winners was actually Elizabeth WarrenKamala Harris wowed early when, during shouting chaos among the 10 candidates, she reminded the other candidates that Americans “don’t want a food fight; they want to know how to put food on the table”. She was powerful, precise and put her formidable legal skills to work on camera attacking Joe Biden’s record on race and bussing.Biden worked hard to tie himself to President Obama and aggressively defend his civil rights record, but he struggled under Harris’s withering prosecutor-style cross-examination.One of the debate’s other winners wasn’t even present: Elizabeth Warren – who, along with Harris, has clearly taken Bernie Sanders’ mantle as flag-bearer for the progressive base. Sanders started the revolution, but Warren and Harris seem poised to execute it. * Art Cullen is editor of the Storm Lake Times in Iowa and won the 2017 Pulitzer Prize for Editorial Writing. He is the author of Storm Lake: A Chronicle of Change, Resilience, and Hope Moira Donegan: Harris was the only real standoutAt once more scripted, less policy-oriented, and more emptily contentious than Wednesday’s debate, the second Democratic presidential debate was mostly a competition to outshine the current frontrunner, Joe Biden.Kamala Harris succeeded; few of the other candidates managed to convey their message as effectively. Harris emphasized economic justice and conveyed her policy agenda through a series of morally charged anecdotes about struggling families, including her own: she adeptly attacked Biden’s record on race by invoking her own childhood as a beneficiary of school bussing. She also had one of the best sound bites of the night, when the debate devolved into one of several shouting matches: “America does not want to witness a food fight; they want to know how we’re going to put food on the table.”Biden tried to continue coasting on leftover goodwill from his time in the Obama administration, delivering answers thin on details and thick with platitudes. His vague and non-committal description of the country he would build as president seemed to accomplish little aside from reifying the message he gave rich donors at a recent fundraiser: “Nothing would fundamentally change.” * Moira Donegan is a Guardian US columnist Malaika Jabali: No one really wonIn a Democratic debate that was obnoxious, contentious, and spent the first 30 minutes largely setting up socialism and progressive policies – like free healthcare, free education, and taxing the wealthy – as impracticable and not the popular positions that they are, no one really won.Nevertheless, within these confines Kamala Harris succeeded. She was assertive but composed, she forcefully addressed racism, and she pushed Biden on his anti-bussing record. Her prosecutorial record will be scrutinized as the race draws on, but tonight she has much to celebrate. * Malaika Jabali is a public policy attorney, writer, and activist whose writing has appeared in Essence, Jacobin, the Intercept, Glamour and elsewhere Geoffrey Kabaservice: Biden was out of step with his own partyKamala Harris was the standout in tonight’s debate, bringing a force, focus, and fire that had been missing since her campaign rollout.Her gains came directly at Joe Biden’s expense and punctured the image he’d cultivated of an above-the-fray front runner. Their viral clash on bussing as a means of achieving racial balance in schools hammered home not only how out of step Biden is with the Democratic left’s evolving stance on identity issues but also his age – since Harris was a schoolchild when Biden was cutting deals with former segregationists.Harris’s victory may be pyrrhic, however, since bussing is an unpopular subject with a long history of widening divisions between Democrats. * Geoffrey Kabaservice is the director of political studies at the Niskanen Center in Washington DC as well as the author of Rule and Ruin: The Downfall of Moderation and the Destruction of the Republican Party Doug Pagitt: Harris won the roomThree candidates clearly had the energy in the room tonight: Joe Biden, Pete Buttigieg, and Kamala Harris. While the other candidates had their moments, there was no doubt that the applause and focused interest in the room was behind those three.As someone who organizes religious people to vote for Democratic candidates, I found it interesting to hear the enthusiastic and prolonged applause for Pete Buttigieg when he said that the Christian faith calls us to care for kids and not put them in cages and he called out the hypocrisy of the Trump administration. It seemed like an indicator that there is interest and enthusiasm for Democratic candidates who talk about faith.Of all the candidates, Biden issued the most forceful denunciations of Trump, and the crowd ate it up. But by the end of the debate it became clear how much passion there is for Harris. I’m not sure how it came across on television, but to those of us inside the room she projected powerful charisma and confidence. * Doug Pagitt is the founding pastor of Solomon’s Porch, a holistic missional Christian community in Minneapolis, Minnesota