Career people (4)
I believe the answer is:
race
I believe this clue is a double definition.
'career' is the first definition.
(career can mean to race around)
'people' is the second definition.
(people can mean a national group or race)
(Other definitions for race that I've seen before include "Run swiftly" , "Breed" , "Run fast" , "Contest; nation" , "The ... is not to the swift (Bible)" .)