What began as a loving gesture to post hearts on their door to show solidarity and support for her husband, an emergency room doctor in the Boston area, has become a viral movement worldwide. “I wanted to find a way to let health care workers know that we see them, we are here for them and they are supported and loved,” says Tanya Russell who began the Hearts for Healthcare Workers Facebook group. Within weeks the group has grown to over 50,000 members with people posting photos of the…