### Clue: Group has no right to change sides as paintings in a gallery burn (2,2,2,6)
### Answer: GO UP IN FLAMES 
 ### Explanation: Definition: burn
G[**r**]OUP has no **R**[ight]; plus IN F[**r**]AMES="as paintings [are] in a gallery", with the **r**[ight] changing sides to L[eft]