Ian McKaye is known best as founder of Dischord Records, front man of Minor Threat and Fugazi, and is credited with popularizing the straight edge movement in hardcore.
I saw Fugazi play an amazing show in Auckland in the early 90s. My main memory is Mr McKaye halting the show when a drunk member of the audience attempted to crowd surf and ended up knocking over the overhead drum microphones mid song. Rather than punching him in the jaw, he made a clear and calm request to the audience, that they refrain from violence and try to have a good time. Having made this request, Fugazi struck right back into the song, with seamless precision.
Check out the new Blacklodge interview with Ian McKaye.