### Clue: Republican upset after film showing abuse (8)
### Answer: MISTREAT 
 ### Explanation: Definition: abuse
 [R(abbrev. for "Republican", a member of the Republican Party) + EAT(to upset/to annoy, as in "what's eating you")] **placed after**(after) MIST(a film of tiny drops of moisture on a surface – a piece of glass or one's eyes, say)