Trouble from ragtag group (5)
I believe the answer is:
aggro
'trouble' is the definition.
(short for aggression or aggravation)
'from ragtag group' is the wordplay.
'from' indicates the answer is hidden within the clue.
'AGGRO' can be found hidden inside 'ragtag group'.
(Other definitions for aggro that I've seen before include "Boorish, threatening behaviour (slang)" , "Bovver!" , "Provocation (informal)" , "In slang, hassle or troublemaking" , "Attacking behaviour" .)