Pan's People finally aware of bigotry (4)
I believe the answer is:
woke
'aware of bigotry' is the definition.
(woke can mean alert to social injustices)
'pan's people finally' is the wordplay.
'pan' becomes 'wok' (wok is a kind of pan).
'finally' indicates one should take the final letters.
The final letter of 'people' is 'e'.
'wok'+'e'='WOKE'
(Other definitions for woke that I've seen before include "Roused from sleep" , "Stopped sleeping" , "Ceased to sleep" , "Came to" .)