Rioters smash the burning wooden frame of a Halloween decoration left in the street Saturday Oct 31, 2004 at the corner of 10th St. and Euclid Ave. on University Hill in Boulder, Colo. 

 

 

 

A rioter smashes a newspaper box on the ground in front of the Fox Theatre on University Hill in Boulder, Colo.  

 

 

 

Rioters rock and flip over a parked SUV parked at the corner of 10th St. and Euclid Ave. on University Hill in Boulder.   

 

 

 

After a crowd of people flipped over a parked SUV, its external components are continually smashed Saturday night on University Hill at the corner of 10th St. and Euclid Ave.

 

 

 

After the crowd of rioters flipped the parked SUV back onto its wheels they further smash and destroy it parked on the corner of 10th St. and Euclid Ave. on University Hill. 

 

 

 

Boulder Police officers dressed in riot gear make their way down 13th St. in an attempt to control the crowds gathered on University Hill. 

 

 

 

Will Barnes of Boulder, right, is hit in the face by a police officer's shield.  Police used tear gas, concussion grenades along with many other forms of crowd control to disperse the riots on University Hill.

 

 

 

Photojournalist Andy Cross takes cover from a tear gas cloud which was thrown at rioters by the police.  

 

 

 

In an attempt to gain control of the crowds gathered on University Hill, a woman is tasered by a Boulder Police officer as she lies on the ground.   

 

 

 

A man hides for cover from the flying bottles and rocks that were being thrown at the police Saturday night outside the Fox Theatre on University Hill.