Kareem Abdul-Jabbar says LeBron James' use of a COVID Spider-Meme was so reckless ... it could cost people their lives.
The NBA legend sounded off on the Lakers superstar in a scathing post on Monday ... ripping LeBron for sharing an image that showed three Spider-Mans pointing at each other.
In the meme -- shared by LeBron over the weekend -- the Spider-Mans were labeled "COVID," "Flu" and "Cold" ... and LeBron captioned the image by saying, "Help me out folks.