If you want to condemn sb, don't worry about the pretext (idiom, from Zuozhuan 左傳|左传); one can always trump up a charge against sb; Give a dog a bad name, then hang him.
trad. 欲加之罪,何患無辭
Also written 欲加之罪,何患無辭【yù jiā zhī zuì , hé huàn wú cí】
If you want to condemn sb, don't worry about the pretext (idiom, from Zuozhuan 左傳|左传); one can always trump up a charge against sb; Give a dog a bad name, then hang him.
trad. 欲加之罪,何患無辭
Also written 欲加之罪,何患無辭【yù jiā zhī zuì , hé huàn wú cí】