### Clue: Brown cut short demagogue's childish outburst (7)
### Answer: TANTRUM 
 ### Explanation: Definition: childish outburst
 TAN(a yellowish-brown colour) + "Trump"(Donald, a famous example of a demagogue/a political leader who seeks support by appealing to the desires and prejudices of ordinary people) **minus ****its last letter**(cut short …).