stir up is a verb meaning "try to stir up public opinion". It carries 4 recorded senses.
arouse or excite feelings and passions
“The ostentatious way of living of the rich ignites the hatred of the poor”
“The refugees' fate stirred up compassion around the world”
“Wake old feelings of hatred”
Definitions, synonyms and semantic relations for stir up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.