Despite thousands of years of intelligent thought and progress, our animalistic nature sometimes gets the best of us. Although we're able to suppress these instincts in our everyday lives, the beasts dwelling within us wait patiently for a spark to ignite our suppressed rage.

When you're on the road, tensions will often boil over, as evidenced in these videos featuring Nirvana, Lamb of God, Green Day and more. Watch the Top 10 Hard Rock Smackdowns above!

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