On this date in history:
In 1922, a New York City realty company paid $100 for the first radio commercial, on station WEAF.
asserted
company → pay → WEAF
In 1941, Nazi German, Hungarian and Ukrainian police completed the two-day massacre of more than 23,000 Jewish men, women and children in Kamianets-Podilskyi, Ukraine.
asserted
police → complete → Podilskyi
By the end of 1941, tens of thousands more civilians would be killed in Vinnytsia and Babi Yar, Ukraine.
asserted
civilians → kill → Vinnytsia
In 1955, while visiting family members in Money, Miss., 14-year-old Emmett Till, an Black American teen from Chicago, was slain for supposedly flirting with a white woman four days earlier.
asserted
Till → visit → woman
His alleged killers were acquitted.
asserted
killers → allege → ?
In 1963, Martin Luther King Jr. delivered his "I have a dream" speech from the steps of the Lincoln Memorial before more than 200,000 people gathered for a "Freedom March" in Washington.
asserted
people → deliver → Washington
In 1968, the Democratic Party nominated Hubert Humphrey for president as thousands of anti-Vietnam War demonstrators battled police in the streets and parks of Chicago.
asserted
thousands → nominate → Chicago
In 1981, John Hinckley Jr. pleaded not guilty to attempting to assassinate President Ronald Reagan on March 30, 1981.
asserted
Jr. → plead → March
The next year he was found not guilty by reason of insanity and was institutionalized for mental health treatment.
asserted
he → find → treatment
He was conditionally released in September 2016.
asserted
He → release → September
In 1986, Soviet spy Jerry Whitworth was sentenced to 365 years in prison and fined $410,000.
asserted
Whitworth → sentence → 410,000
In 1988, three Italian air force jets collided during an air show at the U.S. military's Ramstein Air Base, one crashing in flames into a crowd of spectators.
asserted
one → collide → spectators
Seventy people died.
asserted
people → die → ?
In 1993, the Gouhou dam in Qinghai, a rural township in northwest China, broke, killing more than 200 people.
asserted
dam → break → people
In 1996, after four years of separation, Prince Charles, heir to the British throne, and his wife, Princess Diana, were formally divorced.
asserted
Charles → divorce → throne
In 2005, Hurricane Katrina picked up strength as it roared toward the U.S. Gulf Coast, reaching Category 5 status, with winds of almost 150 mph, touching off one of the largest evacuations in U.S. history.
asserted
it → pick → history
In 2013, U.S. Army Maj. Nidal Malik Hassan, who admitted to killing 13 people and wounding many others at Fort Hood in Texas in 2009, was sentenced to death.
asserted
who → admit → death
In 2018, independent researchers said 2,975 people died in Puerto Rico from Hurricane Maria in 2017, more than double the 1,427 death toll the Puerto Rican government calculated.
asserted
government → say → 2017
In 2020, actor Chadwick Boseman, star of Black Panther and Ma Rainey's Black Bottom, died after a private, four-year battle with colon cancer.
asserted
Boseman → die → cancer
In 2022, a 1952 Topps Mickey Mantle rookie card sold for $12.6 million at auction, becoming the most valuable sports collectible sold at auction in history.
asserted
card → sell → history
The Aporia
