On July 20, 1919, a White man and an African American man were arguing about World War I. The fight got heated and the black man pulled a gun and shot wildly down the street. Some of the bullets hit civilians, with one striking George Doles of 231 East 127th St while he was in his ground floor apartment. Another hit Henrietta Taylor, who was sitting on a stoop on 228 East 127th Street. While the two were rushed to a Harlem hospital, word spread that a riot was about to start, and when police arrived on the scene about a thousand black people were present on the block between 2nd and 3rd Ave. As police attempted to clear the streets they were fired upon from surrounding buildings.
On 20 July, in the northern arena, the Hungarians army took Rakamaz and some nearby villages. Troops of the Romanian 16th and 2nd Vânători divisions took back the villages shortly and regained Rakamaz the next day. The Hungarians renewed their efforts and, supported by artillery fire, retook Rakamaz and two nearby villages but could not break out of the Rakamaz bridgehead.
On 20 July, Hungarian forces established a solid bridgehead on the east bank of the Tisza at Szolnok, opposed by the Romanian 91st Regiment of the 18th Infantry Division. The Hungarian army moved the 6th and 7th divisions across the Tisza River, formed up within the bridgehead, then attacked the Romanians in the first line of defense. The Hungarian 6th Infantry Division took Törökszentmiklós; the 7th Division advanced towards Mezőtúr and the 5th Division advanced towards Túrkeve.
The NAACP sent a telegram of protest to President Woodrow Wilson: The shame put upon the country by the mobs, including United States soldiers, sailors, and marines, which have assaulted innocent and unoffending negroes in the national capital. Men in uniform have attacked negroes on the streets and pulled them from streetcars to beat them. Crowds are reported ...to have directed attacks against any passing negro.… The effect of such riots in the national capital upon race antagonism will be to increase bitterness and danger of outbreaks elsewhere. National Association for the Advancement of Colored People calls upon you as President and Commander in Chief of the Armed Forces of the nation to make statement condemning mob violence and to enforce such military law as situation demands.…
A large air and sealift of Nationalist troops in Spanish Morocco was organised to the southwest of Spain. Coup leader Sanjurjo was killed in a plane crash on 20 July, leaving an effective command split between Mola in the North and Franco in the South. This period also saw the worst actions of the so-called "Red" and "White Terrors" in Spain.
Between 1939 and 1945, there were many plans to assassinate Hitler, some of which proceeded to significant degrees. The most well known, the 20 July plot of 1944, came from within Germany and was at least partly driven by the increasing prospect of a German defeat in the war.
By the afternoon of 20 July, the remaining outstanding issues were resolved as the parties agreed that the partition line should be at the 17th parallel and the elections for a reunified government should be held in July 1956, two years after the ceasefire.
After a nearly decade-long national effort, the United States won the race to land astronauts on the Moon on July 20, 1969, with the flight of Apollo 11. Nixon spoke with Neil Armstrong and Buzz Aldrin during their moonwalk. He called the conversation "the most historic phone call ever made from the White House"
On 20 July, the UN Security Council passed the U.S.-sponsored Resolution 598, which called for an end to the fighting and a return to pre-war boundaries. This resolution was noted by Iran for being the first resolution to call for a return to the pre-war borders, and setting up a commission to determine the aggressor and compensation.
Totti intended to retire from international football after the 2006 World Cup, but reneged on his decision and remained undecided on his future for over a year, not being called up in the meantime. He made his retirement official on 20 July 2007, at the beginning of the 2007–08 Serie A season, due to recurring physical problems and in order to focus solely on club play with Roma.
On July 20, 2008, Facebook introduced "Facebook Beta", a significant redesign of its user interface on selected networks. The Mini-Feed and Wall were consolidated, profiles were separated into tabbed sections, and an effort was made to create a cleaner look. Facebook began migrating users to the new version in September 2008.
On July 20, 2012, a mass shooting occurred inside a Century 16 movie theater in Aurora, Colorado, during a midnight screening of the film The Dark Knight Rises. Dressed in tactical clothing, James Eagan Holmes set off tear gas grenades and shot into the audience with multiple firearms. Twelve people were killed and seventy others were injured, 58 of them from gunfire.
On July 20, 2013, as peace talks were making progress, two rebel attacks on government positions killed 19 soldiers and an unspecified number of combatants. It was the deadliest day since peace talks began in November 2012.
On 20 July 2015, Hawking helped launch Breakthrough Initiatives, an effort to search for extraterrestrial life. Hawking created Stephen Hawking: Expedition New Earth, a documentary on space colonisation, as a 2017 episode of Tomorrow's World.
On 20 July 2015, Cuba and the United States officially resumed full diplomatic relations with sections of "Cuban interests" in Washington, D.C., and "U.S. interests" in Havana upgraded to embassies (The embassies had previously been dissolved in 1961 after Cuba became closely allied with the USSR).
On 20 July 2016, President Erdoğan declared the state of emergency, citing the coup d'état attempt as justification. It was first scheduled to last three months. The Turkish parliament approved this measure.The state of emergency was later extended for another three months, amidst the ongoing 2016 Turkish purges including comprehensive purges of independent media and detention of tens of thousands of Turkish citizens politically opposed to Erdoğan. More than 50,000 people have been arrested and over 160,000 fired from their jobs by March 2018.
On July 20, 2016, Musk detailed his new master plan for Tesla. It includes more affordable cars produced in higher volume, solar-power roofs, mid-size vehicles, SUVs and pickup trucks, as well as the refinement of autonomous vehicles and the creation of a sharing economy, in which cars can be active while the owner is not using them.