The campaign is filing suits in at least three states, and it could bring one nationally.
The sign, which was paid for by the DNC, was on display as the protests take place nationwide over Trump's handling of the pandemic.
"Mr. Biden holds a wide lead with moderates 55-33 percent, who are a plurality of the electorate," pollster J. Ann Selzer said.
Biden continues to lead Trump in most national polls, as well as in recent surveys carried out in key swing states.
Democratic presidential nominee Joe Biden's favorability stands about 15 percentage points above that of President Donald Trump's, right after a full week of Republican National Convention fanfare.
A majority of voters in six key swing states told pollsters they had a favorable reaction to Biden's keynote speech.
On August 19, Kerry Washington opened the DNC by mentioning that she studied the Constitution in eighth grade and memorized its preamble. That was my class—I was the teacher Kerry had mentioned.
"These former members of Congress cited Trump's corruption, destruction of democracy, blatant disregard for moral decency, and urgent need to get the country back on course," the Biden campaign said.
Among Democratic voters, Biden's favorability has increased by 7 percentage points—from 79 percent to 86 percent following the DNC.
The star criticized members of the Democratic Party following this past week's convention, saying that despite all the fanfare, no speakers talked about "a contract with Black America."
The president looked to appeal to evangelical Christians and suburban women as he falsely claimed Democrats are attacking their values — even going so far as to remove "God" from the Pledge of Allegiance.
Taking to Twitter, the actress and #MeToo advocate referred to the former vice president as the "season of darkness."
The Democratic presidential candidate said he would aim to be "an ally of the light, not the darkness."
The Democratic presidential nominee ended the mostly-virtual DNC celebrations with a speech calling for national unity.
The Democratic presidential nominee's speech was dominated by America's many domestic issues, but he did touch on the biggest foreign policy challenges he might face come January.
At the Democratic National Convention, Biden's granddaughters Natalie, Naomi, Finnegan, and Maisy, appeared in a video montage lending their support to his campaign.
"If you entrust me with the presidency, I will draw on the best of us, not the worst," Democratic presidential candidate Joe Biden said. "I'll be an ally of the light, not the darkness."
The convention will conclude Thursday night as Joe Biden formally accepts the Democratic Party's presidential nomination.
Team Trump's latest attack ad is part of a wider digital advertising push amid the Democratic National Convention.
In June, Biden out-fundraised Trump by about $10 million.
The secretary of state was previously criticized for using the GIF, showing cartoon character Lisa Simpson ripping up papers.
The former president launched a broadside at his successor during the Democratic National Convention.
The comedian said the former president couldn't "lecture anyone" on how to behave in the Oval Office.
The wife of Joe Biden addressed the Democratic National Convention from a classroom where she once taught.
This week's Democratic National Convention has been light on foreign policy, even though the careers of the grandee speakers have been partially defined by America's actions abroad.