Usage patterns
〈事〉をスローガンに掲げるto adopt X as one's slogan
The company has adopted "Environment First" as its slogan.
スローガンを唱えるto chant a slogan
The demonstrators chanted the same slogan over and over.
スローガンの下に〈動詞〉to act under the banner of a slogan
The workers gathered under the slogan of "unity".