The Pit bull may be America’s most-reviled dog. An aggressive reputation and association with dogfighting have made pits one of the least adopted and most euthanized breeds in the country. It isn’t even legal to adopt or own one (unless it’s a guide dog) in Miami, Denver and more than 300 other U.S. municipalities. But a loose network of pit lovers is out to change the perception. Through social media, the power of celebrity and outreach efforts at decidedly gentle settings like schools and nursing homes, these advocates are trying to convince the country that pit bulls are no more dangerous than any other furry friend.