BOSTON -- Thursday's protests over the recent grand jury decisions in Missouri and New York were mostly peaceful affairs in Boston but one man is crying foul after being pepper sprayed by Massachusetts State Troopers.

Kin Moy, 24, was filming protesters near an onramp to 93 when he was asked by an officer to move back while attempting to recording an arrest. Moy's video, seen above, appears to show him comply with the officer's orders but the officer pepper sprays him anyway as he is moving backward.

Moy told the Boston Herald that he was participating in the protests with friends when he saw police "dog-piling" a protester.

"I wanted to film all of it just in case, and as I was backing up and complying with his demands but still trying to film everything, he sprayed me," Moy said to the Herald.

The video, which shows Moy's face briefly after he was pepper sprayed, lasts approximately 39 seconds.

"I am absolutely not anti-police I just believe that there has to be accountability and repercussions for excessive use of force all across the board," said Moy during an interview with WFXT.

Massachusetts State Police are investigating the incident.

"We have begun an internal investigation into the action seen in the video to determine whether it constitutes a violation of departmental policy. The department's investigation will be thorough and unbiased," said police spokesman David Procopio.

Moy is speaking with the Massachusetts chapter of the American Civil Liberties Union before proceeding further.

Thousands marched across Boston on Thursday to protest to the recent grand jury decisions that involved white police officers killing unarmed black men. Ten people were arrested and charged with disorderly conduct, disturbing the peace, or resisting arrest.