The Rolling Stones, awhile back, uploaded this video, which you can check out above, to their YouTube channel.
It features a (very) jumpy 1981 performance of "(I Can't Get No) Satisfaction" at Hampton Coliseum in Virginia. As the video's description points out, halfway through the song, a fan jumps on stage and makes a run at flag-clad frontman Mick Jagger.
As any good guitarist/bandmate would do, Keith Richards thinks fast and fends off the fan using his Fender Tele as a club.
Check out the video for all the action (which starts at around 1:10). Enjoy!