颠倒黑白（顛倒黑白）　

◎ 颠倒黑白 diāndǎo-hēibái

[call black white and white black;reversal of black and white confound black and white;stand facts on their heads] 把黑的说成白的,把白的说成黑的。比喻故意违背事实,颠倒是非

公事大小,一概不问,任着幕宾胥吏,颠倒黑白。——清· 彭养鸥《墨籍冤魂》