Stir up, phrasal verb.
Definition (stir something up, stir up something): Cause or provoke trouble or bad feeling.
Examples:
1. He accused me of trying to stir up trouble.
2. The rumours had stirred up his anger.
3. We both laughed nervously and he told me that he had heard that some Asian youths in Leeds had been stirring things up by deliberately leaving rucksacks on buses.
4. A brewery is stirring up a touch of controversy in the Yorkshire Dales - with an advertising campaign declaring that ‘drinking is folly’.
5. "They have been stirring up chaos in Hong Kong and at the same time they want to change the mainland's political system.
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