Sturgeon's cross, avoiding Liberal lampoonery (6)
I believe the answer is:
satire
'lampoonery' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for satire that I've seen before include "Work of ridicule" , "It holds up follies and vices of the powerful to ridicule" , "It holds up folly to ridicule" , "Mockery" , "Irony and ridicule in speech or writing" .)