A Dallas elementary school principal is apparently under investigation for a disparaging Facebook post seemingly critical of Jacqueline Craig, the Fort Worth mother arrested Wednesday after calling police to report that a neighbor had assaulted her 7-year-old son.

On Friday, family attorney Lee Merritt posted a screenshot of a post apparently from the Facebook page of Lana Sprayberry, principal of Inspired Vision Academy, asking followers if it could be verified.

"Stop trying to act innocent," the post reads. "If you had kept your fat mouth shut the cop would not have had a reason to cuff! I wouldn't blame every cop to walk off their job in protest!!! Lord help us!!!"

By early Friday afternoon, A+Charter Schools, the corporate charter system that includes Inspired Vision Academy, had posted a Facebook statement saying it was looking into a comment made by an employee and was taking the matter seriously.

Merritt addressed the post in a Facebook Live video.

"Someone's opinion becomes dangerous when they're responsible for the lives of our youth," Merritt said. "It's not just a matter of free speech. It's a matter of corrupting and endangering our youth."

He called for Sprayberry's dismissal if the comments were found to be true.

"Those students at that school, if she is the head of a school, should not have to endure another semester of that kind of leadership," Merritt said. "That is the kind of leadership that identifies our black children for suspension, for removal to continuation schools, and puts them in the prison pipeline."

Craig, 46, had called Fort Worth police Wednesday to report that a neighbor had choked her son because he had littered and then defied the man's request to clean it up.

Her exchange with the responding officer, captured in a Facebook video that went viral, escalated after he asked her why she hadn't taught her son not to litter. Craig was eventually arrested along with her teenage daughters.

On Thursday, Dallas' Next Generation Action Network led a demonstration over the arrests at the Tarrant County Courthouse in Fort Worth. The event drew about 150 people.