WATCH RELATED VIDEO Submit Conrad Alvin Barrett was charged Thursday with a hate crime in the alleged "knockout" attack of an elderly black man (not shown). "Knockout" game attacks have increased in recent months. In this screenshot, a victim is seen on the ground after her attacker punched her one time in the neck. Advertisement © 2017 HNGN, All rights reserved. Do not reproduce without permission. Advertisement 0 COMMENTS CLOSE COMMENT Get HNGN's Top Stories Newsletter Everyweek You have already subscribed. Thank you.