For months, Democrats ignored or excused the chaos engulfing our cities. Sen. Kamala D. Harris (D-Calif.) went so far as to raise bail money for those arrested during the riots in Minnesota. The looting and vandalism went completely unmentioned at the Democratic convention. In his acceptance speech, Joe Biden condemned the violence in Charlottesville three years ago, but not the violence that was taking place in Portland, Ore., that very week.

Now, all of a sudden, Biden is finally speaking out. What changed? The polls. A new Harvard CAPS/Harris Poll finds 77 percent of Americans are extremely or very worried about crime in our nation’s cities, and a majority believe that local officials are not arresting and prosecuting the perpetrators. So, Democrats have come up with a new strategy: Instead of ignoring the violence, they are trying to blame it on President Trump. The anarchy, the vandalism and assaults on ordinary citizens in Democrat-run cities, they say, is not the fault of Democratic leaders. It is “Donald Trump’s America.”

Nice try.