A loss of a loved one, a failed relationship, these are some things you don't want to be reminded of. But Facebook's "On This Day" feature can sometimes unearth unpleasant memories. Thankfully, you now have more control to filter some of these out. The feature gets new options that lets you either filter out specific people or dates or both of these. This will prevent any posts, photos, statuses you've been tagged in, date you friended someone, and big life events that involve these people. 

Source: SlashGear