An attorney for a man charged with assaulting a teen for keeping his hat on during the national anthem is invoking President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's rhetoric about respecting the flag.

"His commander in chief is telling people that if they kneel, they should be fired, or if they burn a flag, they should be punished," attorney Lance Jasper told the Missoulian. "He certainly didn't understand it was a crime."

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The attorney is representing Curt Brockway, Montana man accused of slamming a 13-year-old to the ground and fracturing his skull after the boy did not remove his hat during the playing of the national anthem at a county fair over the weekend.

Jasper told the Missoulian that Brockway's family has received “hundreds” of death threats since the incident last Saturday.

The attorney added that he will seek a mental health evaluation for Brockway, a military veteran who he said got a traumatic brain injury in a 2000 vehicle crash driving home from Fort Lewis, Wash., later receiving an honorable discharge due to disability.

Jasper said the injury specifically affected Brockway’s frontal lobe, which is central to judgment and problem-solving abilities, according to the newspaper.

"Obviously he owes a big portion of accountability for what took place, but it's certain that there was other things at work here that definitely contributed," he said.

Trump has frequently used campaign rallies to rail against athletes who kneel during the playing of the national anthem to protest police brutality and racial inequality.

Lawyers have previously invoked rhetoric emerging from the White House while defending their clients.

Earlier this year, a lawyer for a man charged with murdering an alleged Gambino crime family boss in Staten Island argued his client was influenced by “hate words that have been spewed by citizens, including politicians, including right at the White House.”

The White House has in the past distanced itself from individuals who claim their actions were justified due to the president's rhetoric.

The Hill has reached out to the White House for comment on the lawyer's remarks this week.

Updated at 11:40 a.m.