On this date in history:

(2017) Demonstrations, known collectively as the Women’s March, were held throughout the world to support gender equality, civil rights, and other issues that were expected to face challenges under newly inaugurated U.S. President Donald Trump; it was widely believed to be the largest single-day demonstration in U.S. history. (2010) In Citizens United v. Federal Election Commission , the U.S. Supreme Court ruled (5–4) that laws preventing corporations and unions from using general treasury funds for independent electioneering communications violated the First Amendment‘s guarantee of freedom of speech. (1997) American politician Newt Gingrich became the first speaker in the history of the U.S. House of Representatives to be given a formal reprimand for ethics violations after the House voted 395–28 in favour of the measure. (1996) Cleanup of 1.8 million gallons (6.8 million litres) of oil began near Block Island National Wildlife Refuge, Rhode Island, two days after the barge North Cape ran aground and created a 12-mile (19-km) oil slick. (1941) Spanish-born singer Plácido Domingo—an operatic tenor whose voice, physical stature, and dramatic ability made him one of the most popular tenors of the late 20th and early 21st centuries—was born in Madrid.  (1924) Vladimir Lenin, who led the Russian Revolution (1917) and later served as the first head (1917–24) of the Soviet state, died. (1905) Fashion designer Christian Dior, whose label became an enduring worldwide success, was born in Granville, France. (1885) Lead Belly—an African American folk–blues singer, songwriter, and guitarist whose ability to perform a vast repertoire of songs, in conjunction with his notoriously violent life, made him a legend—is believed to have been born this day.