Possible Clues:

• Start, as a riot
• Could be seen, say, to provoke
• Provoke, as a riot
• Whip up
• Stir up (violence)
• Provoke dietician to release aid
• That's where it is seen. Stir it up
• By the sound of it, seeing that one may rouse this
• Stimulate, being repeatedly said to produce visible understanding
• Stir up (eg, violence)