Here is a list of notable U.S. politicians who were either assassinated or targeted for assassination:
Assassinated U.S. Politicians:
Donald Trump
On July 13, trump was shot during a rally in Butler, Pennsylvania, and a bullet grazed his ear.
 
Abraham Lincoln (1809–1865)
Position: 16th President of the United States
Assassinated: april 14, 1865, by john Wilkes Booth
Context: Lincoln was shot at Ford's Theatre just days after the Civil war ended.
James A. Garfield (1831–1881)

Position: 20th President of the United States
Assassinated: July 2, 1881, by Charles J. Guiteau
Context: Garfield was shot at a Washington, D.C. train station and died two months later.
William McKinley (1843–1901)

Position: 25th President of the United States
Assassinated: september 6, 1901, by Leon Czolgosz
Context: McKinley was shot during a public event and died eight days later.
John F. Kennedy (1917–1963)

Position: 35th President of the United States
Assassinated: november 22, 1963, by Lee Harvey Oswald (though there are various conspiracy theories)
Context: Kennedy was shot while riding in a motorcade in Dallas, Texas.
Robert F. Kennedy (1925–1968)

Position: U.S. senator from New York
Assassinated: june 5, 1968, by Sirhan Sirhan
Context: He was shot while campaigning for the Democratic presidential nomination.
Martin Luther king Jr. (1929–1968)

Position: Civil rights leader (not an elected politician, but highly politically influential)
Assassinated: april 4, 1968, by james Earl Ray
Context: king was shot in Memphis, Tennessee, while standing on a motel balcony.
Huey Long (1893–1935)

Position: U.S. senator from Louisiana, former governor of Louisiana
Assassinated: september 8, 1935, by Carl Weiss
Context: Long was a controversial populist politician, and he was shot at the Louisiana State Capitol.
Harvey Milk (1930–1978)

Position: Member of the san francisco Board of Supervisors
Assassinated: november 27, 1978, by Dan White
Context: Milk was one of the first openly gay elected officials in the U.S. and was killed alongside Mayor George Moscone.
Politicians Targeted in Assassination Attempts:
Theodore Roosevelt (1858–1919)

Position: 26th President of the United States
Targeted: october 14, 1912, by john Schrank
Context: Roosevelt was shot in the chest while campaigning for the presidency in 1912 but survived and gave a speech before seeking medical attention.
Gerald ford (1913–2006)

Position: 38th President of the United States
Targeted: Two attempts in 1975
• First attempt: Lynette "Squeaky" Fromme, a Manson Family member, tried to shoot him in Sacramento, but the gun did not fire.
• Second attempt: sara Jane Moore attempted to assassinate him in san francisco but missed.
Ronald Reagan (1911–2004)

Position: 40th President of the United States
Targeted: march 30, 1981, by john Hinckley Jr.
Context: Reagan was shot in Washington, D.C., but survived after emergency surgery.
Gabrielle Giffords (1970–)

Position: U.S. Representative from Arizona
Targeted: january 8, 2011, by Jared Lee Loughner
Context: Giffords was shot in the head during a public event in Tucson, Arizona. She survived but suffered severe brain injuries.
Andrew Jackson (1767–1845)

Position: 7th President of the United States
Targeted: january 30, 1835, by richard Lawrence
Context: Jackson survived an assassination attempt when both of the assailant's pistols misfired.
These incidents underscore the threats that political leaders often data-face, many of which have altered the course of U.S. history.