NSA spys on internet porn viewing of a Muslim American who was never accused of unlawful activity

Great, we have a government that is tracking an American's internet porn habits.  No evidence that the person was engaged in any illegal activity.  From the New York Post:

. . . The top-secret papers  – leaked by whistleblower Edward Snowden – show that the NSA monitored porn proclivities of six targets that the NSA claimed are “exemplars” of how “personal vulnerabilities” can be learned through electronic surveillance, and then exploited to undermine the target’s credibility and reputation, according to the Huffington Post, which obtained the documents. 

None of the six Muslims are accused of being involved in terror plots, and one is described as a “US person,” suggesting the target is a US citizen or legal resident. . . . 

It is not known if NSA went through with its plans to discredit the Muslims, either publicly or privately.