The great ‘Famous Black Inventors’ scam and how it is worked on credulous dupes and simpletons

An alternative history has been carefully constructed in which many of the things we take for granted today, ranging from electric light bulbs to peanut butter, are claimed to have been invented by black people. It is suggested that these pioneers have been airbrushed from history, due to racial prejudice.
https://www.youtube.com/watch?v=vrg0Od4cqOM
https://www.youtube.com/watch?v=6xt2N345ihc&t=4s
https://dailyhive.com/seattle/....inventions-by-black-
https://en.wikipedia.org/wiki/William_B._Purvis