With the word "wrong" (in the question title) I am referring to whether something is either a breach of copyright or otherwise considered "bad" behavior.
The behavior here would be copying a photo from a free article in a foreign language newspaper and tweeting it. The tweet itself would not be in same language as the original but it would include a link to the original article.
If the photo is less than 10% of the original article (meaning that this is not a question of duplicating the original article), is this illegal or otherwise considered inappropriate?