Is there any evidence of the public being put at risk by these government mandated exploits ? Privacy and Civil Liberties seem less popular arguments to oppose

Is there any evidence of the public being put at risk by these government mandated exploits ? Privacy and Civil Liberties seem less popular arguments to oppose the 'keep the public vulnerable' policy than public safety. Speculative Fiction : "It seems the evil-doers procured the Celebrity's schedule by eavesdropping their calls with a Stingray. During the kidnapping they jammed the cell communications of the security team and trivially evaded pursuit by tracking the cells of the pursuit squad with the Stingray device. You mean by spying on our citizens we have made everyone of us unsafe ? Yes Madam President, our monopoly on the backdoors was only temporary. " It occurs to me that the police themselves use cell communications. Are they similarly vulnerable to tracking / intercepts ? If so then this is a staggeringly short sighted policy.