By visiting this link Facebook Ad Preferences you can see what information Facebook has gathered about you (and what Facebook assumes it knows about you). For example, if you click on the “Lifestyle and Culture” tab, you may see “US Politics.” It should say whether Facebook believes you’re conservative or liberal (they guessed mine WRONG).

facebook ad preferences

You can report or delete this information by hovering your cursor over the “interest” you want gone and clicking the X. But even if you delete all of your ad preferences, you’ll still receive ads on your page… they just might be a little less accurate.