5 Incredible , Black History Facts.<br />1, The most iconic part of Dr. Martin Luther King Jr.'s "I Have a Dream" speech was improvised.<br />King had prepared a more <br />political speech the night before.<br />In the moment, he decided to speak from his heart, coining the historic phrase, "I have a dream.".<br />2. , A slave named Onesimus <br />introduced vaccination to America.<br />In 1706, Onesimus told Cotton Mather <br />about the inoculation traditions in Africa.<br />Mather then convinced Dr. Zabdiel Boylston <br />to experiment with the idea amid a smallpox epidemic <br />in 1721, and it turned out to be a success.<br />3. , One in four cowboys was Black.<br />Freed slaves decided to pick up the <br />cowboy lifestyle at the end of the Civil War.<br />It's even believed that the "Lone Ranger" was inspired by an African American named Bass Reeves.<br />4, The cartoon character Betty Boop was inspired by jazz singer Esther Jones.<br />Jones, known as "Baby Esther," incorporated trademark "boops" and scat sounds into her performances.<br />These sounds were adopted by cartoonist Max Fleischer <br />for Betty Boop's signature "Boop Oop A Doop!".<br />5, U.S. interracial marriage was banned <br />in 1664 and not overturned until 1967.<br />Richard Loving and Mildred Jeter were arrested in Virginia after marrying in the District of Columbia.<br />Their case went to the Supreme Court, <br />where the ban on interracial marriage <br />was ruled unconstitutional
