Welcome back to our 30 for 30 documentary short series.

When Dusty Baker hit his 30th home run for the Los Angeles Dodgers in 1977, the first man to greet him at home plate was his friend and teammate, rookie Glenn Burke. Overcome with happiness, Burke did the first thing that came to mind — he put his hand straight in the air and had Baker slap it. Welcome to the birth of the high five. From there, our short follows Burke’s story as he became a victim of bigotry and then a local hero for social change.

Recent 30 for 30 Shorts

• Mecca: The Floor That Made Milwaukee Famous, directed by Chris James Thompson »

• Posterized, directed by Andrew Jenks »

• From Harlem With Love, directed by Matt Ogens »

• Untucked, directed by Danny Pudi »