“Police line them up and tell them to put their hands against the wall. I started asking myself ‘Is this normal?’ I just kept thinking police can’t do this,’’ said Saleh, 36.

In June 2012, he installed 15 surveillance cameras in the store, not to catch criminals but to watch the police. He collected over two dozen videos showing a multitude of instances where cops used excessive force, issue unwarranted citations and filed inaccurate police reports in connection with arrests, the Herald reports.

“There is just no justifying this kind of behavior,’’ said Chuck Drago, a former police officer and consultant on police policy. “Nobody can justify overstepping the constitution to fight crime.”