Killer, nevertheless popular revolutionary, right? (7)

I believe the answer is:

butcher

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'killer' is the definition.
(butcher is a kind of killer)

'nevertheless popular revolutionary right?' is the wordplay.
'nevertheless' becomes 'but' (I've seen this in another clue).
'popular revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary. I am not sure about the 'popular' bit.).
'right?' becomes 'r' (abbreviation).
'but'+'che'+'r'='BUTCHER'

Can you help me to learn more?

(Other definitions for butcher that I've seen before include "One sells meat" , "Purveyor of meats" , "Meat purveyor" , "more masculine?" , "more macho" .)

I've seen this clue in The Times.

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