In September 2006, a gunman took several students hostage at Platte Canyon High School -- among them Emily Keyes, who texted "I love you guys" to her family shortly before she was killed. In the years since then, Emily's Parade, a motorcycle rally and gathering to benefit the I Love You Foundation, an organization started by John-Michael Keyes, Emily's father, in her honor, has only grown in size and passion. Look below to see photos of Sunday's event, in which motorcyclists rode from Columbine High School (scene of the 1999 school shooting that shocked the nation) to PCHS, where participants gathered on a gorgeous day to remember a beautiful spirit. Continue to see more photos of Emily's Parade. Continue to see more photos of Emily's Parade.