Yarl, 17, who was shot in the head in April after mistakenly going to the wrong house to pick up his siblings, made his first appearance Monday at the fundraising event in Overland Park, Kansas. SUBSCRIBE to ABC News on YouTube: bit.ly/2vZb6yP Latest updates: abcnews.go.com Watch FULL EPISODES on Hulu: abcn.ws/3bzvQQn #news #ralphyarl #gunviolence #abcnews