1) Think about an issue that can harm a company's image and reputation. Some examples are:
1a) Select a company you are interested in and see if they have been involved in any controversy.
1b) Do a very general Google search for "public relations" and "crisis" or "controversy"
2) Search Google using either an issue or a company name and a term such as "scandal" or "controversy" or "crisis."
3) Scan results to find a scandal in which you are interested and get some background on the issue. Note any unique terms that may be used in reporting of the issue.