Protesters marched across the nation on Saturday, April 15 — the day largely recognized as the deadline for Americans to file their taxes — to call out President Donald Trump’s refusal to release his tax returns, which more than four decades of presidents have done before him.

Organized as #TaxMarch, thousands marched in protests across the United States marched hoping to apply pressure on the White House to release Trump's tax returns.

During the campaign then-candidate Trump, citing an ongoing audit by the Internal Revenue Service (IRS), implied he could not release his tax returns. The IRS has countered that he could, in fact, release his tax returns.

Celebrities, including Sarah Silverman and Debra Messing, participated.

And the protests weren't limited to Los Angeles, Washington, D.C., and New York.

The president has yet to respond to the wave of protests.

Beyond tradition, Trump releasing his latest tax returns would tell the American people whether he pays his fair share of taxes and give them a clearer sense of how he makes his money.

The full extent of the president’s financial dealings are unknown to the public due to his lack of disclosures, including whether he is invested in certain industries or companies that his own policies could impact.

There is no law that requires the president to release his tax returns. However, lawmakers in at least 24 states have introduced bills to require presidential candidates to release their tax returns in order to get on the ballot.