The last person you expect your kid to be bullied by is his school principal.

But that's exactly what Lisa Riley, the mother of a recent high school graduate from Carlsbad, New Mexico, says happened to her son.

Last year, Principal Adam García Amador of Carlsbad High School allegedly tried to "bully" Will Riley into silence as he planned a nationwide walkout in support of the Second Amendment.

Despite those alleged threats, Will Riley went on to lead a successful nationwide high school walkout, Stand for the Second. Lisa Riley wrote in a letter to the school board claiming that Adam García Amador "supported and assisted" gun control advocates in their walkout, but threatened her son with criminal charges over his planned walkout.

"These actions are a clear example of viewpoint discrimination, and like any form of discrimination, are unacceptable in the public schools," Riley writes in the August 19 letter.

Riley writes that in his first meeting with her son, Amador was "hostile and rude" to her son and even claimed, "the Second Amendment is not even a part of the Bill of Rights." In a subsequent meeting, Riley claims Amador brought in five police officers in "an attempt at intimidation," and threatened her son repeatedly with criminal charges, saying he would hold Will personally responsible for anything "anyone" did wrong.

"Amador's repeated threats of arrest stand in sharp contrast to the assurances given to the National Day of Action [gun control] students, that law enforcement was there "for their protection, and not to quell their Expression,” adds Riley.

The NRA Institute for Legislative Action reached out to Principal Amador for comment. He directed us to the school superintendent's office for a response. The superintendent was not immediately available for comment.

Riley says she waited to go public on Amador's actions until after her son graduated from high school because she feared retaliation.

Riley plans to voice her concerns about Amador's action at a school board meeting Tuesday, August 21.