The woman claims Moore had initiated sexual contact with her in 1979 when he was a state prosecutor. Moore has since denied the allegations.
The hashtag was initiated by North Carolina Lawyer Catherine R L Lawson, who tweeted “Can’t consent at 14. Not in Alabama. Not anywhere.”
"I shared a picture of me at 14 to illustrate there is no acceptable version of this story; teenagers can't consent to a relationship with a grown man, ever,” she told the BBC.
Read some of the many powerful tweets below.
If you or someone you know is impacted by sexual assault, domestic or family violence, call 1800RESPECT on 1800 737 732 or visit www.1800RESPECT.org.au