Jim McGovern: Can Biden unite the left?

President Donald Trump is in trouble. Coronavirus has plunged the US economy into recession, the killing of George Floyd has inflamed racial tensions and the president’s poll ratings have slumped. This summer the Democrats can sense an historic opportunity. But are they capable of seizing it? HARDtalk’s Stephen Sackur speaks to Democratic Congressman Jim McGovern – is it enough for Democrats and their presidential candidate Joe Biden to be the party of Not Trump?