give a dog a bad name and hang him 众口铄金，积毁销骨；欲加之罪，何患无辞；人言可畏

【例句】
Give a dog a bad name and hang him is true in george's case, for no in ever has a good word to say for him now.
人言可畏，乔治的情况便是如此，现在没人替他说一句好话了。

Give a dog a bad name and hang him, right?
人言可畏，一旦有了恶名就难以洗刷掉，不是吗?