Nationalist group getting in touch (7)
I believe the answer is:
patriot
'nationalist' is the definition.
(synonyms)
'group getting in touch' is the wordplay.
'group' becomes 'trio' (a group of three).
'getting in' indicates putting letters inside.
'touch' becomes 'pat' (pat is a kind of touch).
'trio' going within 'pat' is 'PATRIOT'.
(Other definitions for patriot that I've seen before include "Loyal citizen" , "Flag waver" , "Country lover" , "A lover of fatherland" , "No traitor" .)