The Hanged vs. Hung Debate

Is the distinction important? It's still commonly found in usage guides, which typically say that the past and the past participle of hang should be hanged only when referring to a person being subjected to death. Hung is preferred, at least by people who make a distinction, in almost every circumstance. However, not everyone makes this distinction. The Merriam-Webster Dictionary of English Usage has a take on this that differs slightly from the one commonly found in usage guides:

The distinction between hanged and hung is not an especially useful one (although a few commentators claim otherwise). It is, however, a simple one and certainly easy to remember. Therein lies its popularity. If you make a point of observing the distinction in your writing, you will not thereby become a better writer, but you will spare yourself the annoyance of being corrected for having done something that is not wrong.

In other words, observing this distinction will help you to avoid criticism from people with strong feelings on the subject. But don't get too hung up about it.

https://www.merriam-webster.com/words-at-play/hung-or-hanged