Socialist leader crushed by Conservative country and American people (8)
I believe the answer is:
comanche
'socialist leader' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'crushed by conservative country and american people' is the wordplay.
'crushed by' says to put letters next to each other (in a down clue, some letters go on top of others).
'conservative' becomes 'C' (UK political abbreviation).
'country' becomes 'oman' (Oman is an example).
'and' says to put letters next to each other.
'american people' becomes 'che' (I can't justify this - if you can you should give a lot more credence to this answer).
'c' put next to 'oman' is 'coman'.
'coman'+'che'='COMANCHE'
Can you help me to learn more?
(Other definitions for comanche that I've seen before include "brave" , "SW American Indian" , "SW US Indian" , "Indians" , "Native of 7 ac" .)