A fan jumped on stage last Thursday (November 1) during Robert Plant's concert in Buenos Aires, Argentina, forcing the LED ZEPPELIN singer to crouch backward while security dragged the young man off stage.

According to Spinner.com, Plant and his group THE SENSATIONAL SPACE SHIFTERS had just performed ZEPPELIN's "Going to California" at Estadio Luna Park and were wrapping up "Rock And Roll" when "a man jump[ed] onstage and approach[ed] Plant from his left as the 64-year-old thank[ed] the crowd for coming out. Plant [saw] the fan at the last minute and crouche[d] backward. However, a roadie [came] from the other side of the stage. In trying to tackle the fan, the roadie inadvertently knock[ed] Plant over to the ground. The singer quickly [got] up and [said], 'Easy, easy' in the direction of the roadies, most likely asking them to not rough up the fan. Fortunately, the fan had no weapon nor [did] it appear that Plant was injured."

"Thank you very much for the fun," Plant said before he left the stage.

LAMB OF GOD frontman Randy Blythe recently spent five weeks in a jail in the Czech Republic where he is facing manslaughter charges in connection with the death of a fan more than two years ago.

Blythe, 41, is accused of causing the fatal injury that occurred at LAMB OF GOD's May 24, 2010 show in Prague. The singer allegedly either pushed or struck a 19-year-old fan named Daniel N. — a guitarist in a local metal band — and that person died almost a month later of bleeding in the brain.

A number of rockers have come to Randy's defense, with many of them citing the 2004 shooting death onstage of PANTERA guitarist "Dimebag" Darrell Abbott as the reason why musicians are so defensive nowadays about fans invading the stage.

DISTURBED drummer Mike Wengren told The Pulse Of Radio not along after Dimebag was shot that his death had cast a shadow over live performing. "I think one of the most scariest things is, you go up onstage, and there's this energy transfer between the band and the crowd, and you almost feel invincible. You feel very empowered. Never in a million years would anyone ever think something like that was even possible, and I think it just caught everyone off guard. It's pretty scary."

Speaking to Metalholic.com, FIVE FINGER DEATH PUNCH drummer Jeremy Spencer said, "I think for fans these days, especially after the 'Dimebag' Darrell incident, I just think don't [go up] on stage unless you're invited — I mean, that's the only time. Because everything changed after that day. . . These days, it's almost better to stay off the stage unless you're invited, I think. That's my take on it, anyway."

FIVE FINGER DEATH PUNCH bassist Chris Kael simply tweeted, "Everything changed on December 8, 2004. #stayoffthestage #FreeRandyBlythe," while ANTHRAX guitarist Scott Ian wrote, "It's complete and utter bullshit for him to be treated like a criminal for something he didn't do. Now fans can see firsthand why there's no stage diving anymore. Especially in the post-Darrell world we live in . . . Of course it's sad that this person died, it's a tragedy, but it's not Randy's fault."