Like DeacHead said, I couldn't figure out how to summarize because it's all over the place and who knows what's real, but:
Former Republican congressional candidate Dean Browning tweeted the above in response to a tweet, claiming to be a gay black man
This was widely mocked
Browning claimed he had accidentally posted an email he received
Internet sleuths found what appeared to be his burner account claiming to be a gay black man named Dan Purdy
Said account posted a video of someone claiming to be Dan Purdy
Browning shared the video
Internet sleuths looked into the guy and determined he may be Patti LaBelle's nephew / son, who is not named Dan Purdy
Leaving many open questions, tbd.