The United States is not alone in facing these risks . Some critics dismiss the impact of these revelations , saying every country spies . Robert Zelizer : It 's dangerous to consider the possibility that spying will become too intrusive . In the 1960s , too , activists were illegally targeted by government agencies in the U.S. Zelizer : It 's crucial to set limits for government agencies such as NSA .
Some critics dismiss the impact of these revelations , saying every country spies . Robert Zelizer : It 's dangerous to consider the possibility that spying will become too intrusive . In the 1960s , too , activists were illegally targeted by government agencies in the U.S. Zelizer : It 's crucial to set limits for government agencies such as NSA .