Many of today's mass shooters are claiming to be "targeted individuals", or subjects of FBI/NSA surveillance.

Gavin Long, Baton Rouge gunman, claims he was targeted by government agents with advanced technology - https://www.nytimes.com/2016/07/20/us/gavin-long-baton-rouge-targeted-individuals.html

Aaron Alexis, Naval Yard gunman, had a "secret" security clearance and claimed he was being made to hear voices - https://www.reuters.com/article/us-usa-navy-shooting/u-s-navy-was-warned-that-washington-shooter-heard-voices-idUSBRE98F0DN20130917

Myron May, lawyer and library shooter, claimed government officials were targeting him using "directed energy weapons" - https://www.tallahassee.com/videos/news/local/2015/02/05/22950769/

If the government is in fact somehow responsible for the shooting rampages of these "targeted individuals", then what laws/ policies could be justifying this? Is this tied to the Foreign Intelligence Surveillance Act of 1978's electronic surveillance?

A quick look at attempted FISA lawsuits shows that particular "electronic surveillance" methods are so secret that almost any case will be dismissed due to the "state secrets privilege" meant to hide classified information such as the sources of information. Even the FISC, or Foreign Intelligence Surveillance Court is held in a secure room that is shielded from electromagnetic frequencies.

Donald Trump has also claimed to be a victim of FISA abuses, along with key members of his campaign such as Carter Page, whom FBI agents lied repeatedly on surveillance warrants about in order to target. In fact, when Trump's' Mar-a-Lago estate was raided the FBI claimed they were seizing classified documents relating to "weapons of mass destruction" and "classified intelligence sources that would threaten national security if exposed".

Weapons of mass destruction means "devices that are capable of emitting radiation" (radio waves and microwaves are EM radiation) according to the definitions section of the FISA Act. And remember FISA's electronic surveillance and the state secrets privilege being used in those cases to protect the secret methods used for conducting the surveillance?

But that still leaves one major question. If the people responsible for these mass shootings are all under targeted government surveillance, how is it that they are able to conduct these attacks unimpeded?