I remember that well, I was furious after Harden's dirty hit on Largent. Largent was knocked unconscious and had two teeth broken. Largent was thought of as a squeaky clean Boy Scout type, but he did indeed exact revenge and showed just how tough he actually was. That took place in 1988 when Largent was 34 and playing his penultimate season.
That hit on Largent was one of the reasons why I mentioned the "head hunting" going on in those days in the interview I did with James Edwards for American Free Press. The few White receivers around were mercilessly pummeled, including Largent who at the time was the all-time leading receiver in NFL history. It only made him more of a target rather than a "revered" figure as accomplished blacks are toward the end of their careers. The head hunting still goes on of course but the worst of it has been curtailed as compared to the late '80s and '90s when anything went.