West of Mississippi, episodic war with Native Americans
Sir Robert Peel formed the Metropolitan Police Force in 1829
New York City started the anti-abolition riots in 1834
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Both Boston and New York City copied what London had done and created, in stops and starts, their own professional police forces in the 1840s and 1850s
The Congress began appropriating money for tribal police agencies
The Pendleton Act was passed, it established the U.S. Civil Service Commission to enforce its provisions
In November 1986, it emerged that the White House had secretly sold arms to Iran in an effort to win the freedom of U.S. hostages in Lebanon, and then diverted money from the sales to Nicaraguan rebels known as the Contras.
The New York Bureau of Municipal Research was formed
Vollmer established formalized police training, and encouraged officers to take college classes
The International City Manager Association was founded and the University of Michigan offered a degree in municipal administration
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The first Red Scare occurred in the beginning of World War I. The Russian Revolution of 1917 saw the Bolsheviks, led by Vladimir Lenin, topple the Romanov dynasty, kicking off the rise of the communist party
Last official battle with Native Americans
The Sedition Act of 1918 targeted people who criticized the government, monitoring radicals and labor union leaders with the threat of deportation.
The first Red Scare climaxed in 1919 and 1920, when United States Attorney General Alexander Mitchell Palmer ordered the Palmer raids, a series of violent law-enforcement raids targeting leftist radicals and anarchists.
The 18th Amendment to the U.S. Constitution, known as the Prohibition Amendment was adopted in the 1920s and made the making, selling, possessing, and consuming of alcoholic drinks illegal
In the early 1930s, liquor was illegal, but people in Nebraska found ways to buy or make their own alcohol.
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Following World War II (1939-45), the democratic United States and the communist Soviet Union became engaged in a series of largely political and economic clashes known as the Cold War.
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U.S. during the Cold War between the Soviet Union and the United States, which intensified in the late 1940s and early 1950s
The 1960s were one of the most tumultuous and divisive decades in world history, marked by the civil rights movement, the Vietnam War and antiwar protests, political assassinations and the emerging "generation gap"
The Birmingham church bombing took place on September 15, 1963, when a bomb exploded before Sunday services at the 16th Street Baptist Church in Alabama a church with Black congregation that also served as a meeting place for civil rights leaders
The 1967 Detroit Riots, were the most violent riots in U.S. history, burning and looting ended after five days, 43 people were dead, 342 injured, nearly 1,400 buildings had been burned and some 7,000 National Guard and U.S. Army troops had been called in
delegates flowed into the International Amphitheatre to nominate a Democratic Party presidential candidate, tens of thousands of protesters swarmed the streets to rally against the Vietnam War and the political status quo
On May 4, National Guardsmen shot four student demonstrators at an antiwar rally at Kent State University in Ohio known as the Kent State Shooting. Ten days later, police officers killed two black student protestors at Mississippi’s Jackson State
In November 1986, it emerged that the White House had secretly sold arms to Iran in an effort to win the freedom of U.S. hostages in Lebanon, and then diverted money from the sales to Nicaraguan rebels known as the Contras.
On March 3, 1991, paroled felon Rodney King led police on a high-speed chase through the streets of Los Angeles County before eventually surrendering. Intoxicated and uncooperative, King resisted arrest and was brutally beaten by police officers
A series of four coordinated suicide terrorist attacks by the militant Islamist terrorist network al-Qaeda against the United States
Michael Brown, 18, was killed by a police officer, in Ferguson, Missouri, who was responding to reports that Brown had stolen a box of cigars.
Tamir Rice, a boy of 12, was shot dead in Cleveland, Ohio by a police officer after reports of a male who was "probably a juvenile" pointing a gun that was "probably fake" at passers by.
Breonna Taylor, a 26-year-old emergency medical technician, was shot eight times when officers raided her apartment in Louisville, Kentucky. Louisville police said they returned fire after one officer was shot at and wounded.
George Floyd died after being arrested in Minneapolis and held down by police officers, one of whom had his knee on Floyd's neck for more than nine minutes.
. Sadly, the withdrawal of U.S. troops from Afghanistan in 2021 left the region even more unstable than it was before the attacks of September 11, 2001.
Daunte Wright was shot and killed in Brooklyn Center. After being pulled over for a traffic violation, the police told Wright he was being arrested for an outstanding warrant. He broke free and tried to get in his car, at which point an officer shot him
