One man fights terrorism for a living. Yet, his family is being attacked in the US because ... Islamophobia.

Zeeshan-ul-hassan Usmani and his family have been victims of the latest series of Islamophobic incidents in the US. Unlike other families, this one is not having it.

Usmani's youngest son, 7-year-old Abdul Aziz was beaten and bruised at his school in Cary, North Carolina after refusing to eat non-halal food.

"Welcome to the United States of America of Donald Trump. Meet my son Abdul Aziz. He is in grade 1, bullied and beaten by his own classmates in school bus for being a Muslim," Usmani wrote in a Facebook post following the incident.

Five classmates ganged up on the 1st grader. They taunted him about his name, and then got physical. They "punched him in the face, kicked him in the stomach, and twisted his arm whole calling him 'Muslim' again and again," said Usmani, according to Huffington Post .

Usmani himself is a two-time Fulbright Scholar and an award-winning computer scientist who uses big data to combat terrorism. He's developed a software that "models the damage of suicide bombings."

He fights terrorism for a living, and this is how his family got repaid for it. For now, he has decided to move his family back to Pakistan. Ironically, two of his sons needed a visa to get in to Pakistan.

Usmani will need to travel back and forth between the two countries due to his work. He may consider bringing his family back to the US, provided Donald Trump loses the election.

This wouldn't be the first time Usmani's family has faced prejudice.

His two other boys were also victims of bullying. The classmates called their father a "terrorist" for having a beard.

The family's neighbor has a history of harassing them with racial slurs and threatening Usmani's wife.