Should end malice, perhaps, when you make a speech (7)
I believe the answer is:
declaim
'make a speech' is the definition.
(I've seen this before)
'should end malice perhaps' is the wordplay.
'end' indicates one should take the final letters.
'perhaps' indicates anagramming the letters.
The last letter of 'should' is 'd'.
'malice' with letters rearranged gives 'eclaim'.
'd'+'eclaim'='DECLAIM'
'when you' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for declaim that I've seen before include "Speak imposingly" , "Rail against" , "Recite with a touch of eloquence (7)" , "Spout" , "Make a set speech" .)