One animal rights activist has pleaded guilty and another no contest for their roles in stalking and harassing faculty members at the University of California at Los Angeles who conduct research with animals, the Los Angeles County District Attorney's Office announced  Friday. One faces a prison sentence of three years while the other must stay away from all University of California campuses or property. UCLA officials praised authorities for cracking down on those who engage in harassment. "Criminal acts to advance a cause or a belief have no place in a civilized society," said a statement  from UCLA Chancellor Gene Block. "While we respect the rights of those who take a different view of animal research, we are committed to protecting our researchers from harassment and providing an environment where they can continue their work toward cures and a greater understanding of the human body."