Little People of America -- regarded as the largest dwarfism support organization in the world -- is going after Jerry Jones following his use of the m-word on Tuesday ... demanding he issue an apology immediately.
The LPA slammed the Cowboys owner in a statement to TMZ Sports ... just hours after the 79-year-old used the term while making a joke to a group of media members at the first day of Dallas Cowboys training camp in Oxnard, Calif.
"M***** is a term that has widely been known to be derogatory for years and should be common knowledge to anyone in the public arena, such as Jerry Jones," the LPA said.