In an urban church near looted downtown buildings in Kenosha, Wis., Joe Biden told the diverse group in the pews that President Donald Trump was the accelerant for the country's burning racial divide. An hour later, in a leafy Milwaukee suburb that is 90 percent White, Biden discussed the challenges of going back to school when districts are struggling to reopen - a problem they wouldn't have, he said, if Trump hadn't bungled the coronavirus response. The next day, Biden said in a nationally televised speech that the nation's recovery would be racing ahead if not for one man, Trump, whose coronavirus response he said cratered the economy. Biden has been under intense pressure from allies to hasten his campaign pace - but from there the advice has diverged, with some favoring a strategy meant to attract some White working-class voters and others Black voters who are mobilizing and calling for racial justice. Amid the frenzy of recommendations, Biden has settled on a through line meant to appeal to everyone: Trump is the reason for all of America's most pressing ills, no matter which one matters most to a specific audience. A newly energized Biden campaign last week demonstrated its biggest burst of campaign activity in six months, as an internal debate over how to position Biden for the rush to November led to a far more aggressive candidate, a rewritten campaign message and a robust travel schedule. While the tension over responding to the nation's urban protests and Trump's new emphasis on "law and order" prompted adjustments last week, many Biden advisers say they still believe the election will be decided on Trump's response to the coronavirus, which has disrupted the economy and continues to be a major health crisis that is killing nearly 1,000 Americans each day. "This is foundational. ... This is where the...