Leader snatched from platform? That's hatred! (5)
I believe the answer is:
odium
'that's hatred' is the definition.
(odium is a kind of hatred)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for odium that I've seen before include "Dislike of someone, or something hated" , "Offensiveness" , "Widespread dislike and contempt" , "Widespread dislike or disgust" , "Wide-spread disgust towards a person or action" .)