Question: What holiday did the democrat from Michigan born on May 16, 1929 propose?

Context paragraphs:
Thomas Hickman Williams: Thomas Hickman Williams (January 20, 1801May 3, 1851) was a United States Senator from Mississippi.  Born in Williamson County, Tennessee, he attended the common schools, moved to Mississippi and settled in Pontotoc County, and engaged in planting.  He was appointed and subsequently elected as a Democrat to the U.S. Senate to fill the vacancy caused by the resignation of James F. Trotter and served from November 12, 1838, to March 3, 1839.  After his time in the Senate he was secretary and treasurer of the University of Mississippi at Oxford from 1845 to 1851 and was known as "Father of the State University," being the first to propose it and also aiding to secure it.

James Van Inwagen: James W. Van Inwagen, Jr. (May 16, 1869 – September 1, 1928) was an American businessman and a member of the Tiffany family.  He played college football for the University of Michigan from 1888 to 1891 and was captain of the 1891 Michigan Wolverines football team.  After graduating from Michigan, he operated the Tiffany Enameled Brick Company in Illinois with his father, James Van Inwagen, Sr.  He later moved to New York where he served as the president of the Tiffany Electric Manufacturing Company, the maker of Tiffany Never-Wind Clocks.

Death of Aiyana Jones: Aiyana Mo'Nay Stanley-Jones (July 20, 2002 – May 16, 2010), was a seven-year-old African-American girl from the east side of Detroit, Michigan who was shot and killed during a raid conducted by the Detroit Police Department's Special Response Team on May 16, 2010.  Her death drew national media attention and led U.S. Representative John Conyers to ask U.S. Attorney General Eric Holder for a federal investigation into the incident.

Democracy Day (United States): Democracy Day is the tentative name of a possible federal holiday in the United States, proposed by Democratic Representative John Conyers of Michigan.

John Conyers: John James Conyers Jr. (born May 16, 1929) is an American Democratic politician and the U.S. Representative for  's 13th congressional district .  The district includes the western half of Detroit, as well as River Rouge, Ecorse, Redford Township, Dearborn Heights, Highland Park, Westland, Garden City, Inkster, Wayne, and Romulus.  As the longest-serving active Representative, he is the Dean of the House of Representatives.

Ronald J. Rabin: Ronald Joseph Rabin (born May 16, 1932) is a Republican state senator in the state of North Carolina, representing the 12th district, encompassing Harnett, Johnston, Lee Counties.  Rabin was born in Rochester, New York in 1932.  He attended high school there and then went on to attend the University of Southern Mississippi where he was in the Reserve Officers' Training Corps program.  He was later commissioned into the Army as a second lieutenant of infantry.  He is a business consultant in the aerospace and defense industries, having served previously in the United States Army as a Colonel for 24 years.  He was elected to the North Carolina Senate on November 5, 2012, having defeated Democrat Brad Salmon.

Ken Doherty (track and field): John Kenneth Doherty (May 16, 1905 – April 19, 1996) was an American decathlon champion, college track and field coach, author and longtime director of the Penn Relays.  While a student at the University of Michigan, Doherty won the American decathlon championship in 1928 and 1929 and won the bronze medal in the event at the 1928 Summer Olympics in Amsterdam.  He later served as a track coach at Princeton University (1929–1930), the University of Michigan (1930–1948), and the University of Pennsylvania (1948–1957).  He was also the meet director for the Penn Relays from 1956 to 1969 and of the first dual track meet between the United States and the Soviet Union in 1959.  He was also a published author of works on track coaching, and his "Track & Field Omnibook" was regarded as "the track coach's bible" from the 1970s through the 1990s.  Doherty has been inducted into at least six athletic halls of fame, including the National Track and Field Hall of Fame and athletic halls of fame at the University of Pennsylvania, University of Michigan, and Wayne State University.

Koester Christensen: Koester L. "Keddy" Christensen (April 28, 1905 – May 16, 1946) was an American football player.  He played college football for Michigan State College (later known as Michigan State University).  He also played professional football in the National Football League for the Portsmouth Spartans during the 1926 season.  After his football career ended, Christensen returned to his home town of Escanaba, Michigan, where he worked as a commercial fisherman.  During World War II, he served aboard a submarine chaser and other ships in the United States Navy, attaining the rank of lieutenant.  He died of a heart attack at his home in Escanaba in 1946 at age 41.

Jim Berryman: Jim Berryman (born February 7, 1947) is a politician from the U.S. state of Michigan.  He is the current mayor of Adrian, Michigan.  He previously served as a member of the Michigan Senate from the 16th district from 1990 to 1998 and as mayor of Adrian, Michigan from 1983 to 1990.  He was the minority whip in the Senate from 1994 to 1998.  He is a Democrat and was the first one ever to be elected to the Michigan Senate from Lenawee County.

Jesse Thomas (American football): Jesse LeRoy Thomas (May 23, 1928 – May 16, 2012) was an American football player.  He played college football for Michigan State University.  He also competed in track for Michigan State.  After leaving Michigan State, he served two years in the United States Army and then played one year for the Winnipeg Blue Bombers of the Canadian Football League.  He later played in the National Football League for the Baltimore Colts from 1955 to 1957 and in the American Football League for the Los Angeles Chargers in 1960.

Supporting paragraphs: Democracy Day (United States) John Conyers
Answer: Democracy Day