Mark had left to go search for his car by the time he’d realized the police were mounting a massive manhunt for him. His first reaction: fear. He immediately took off his shirt. He skirted a mob of policemen, afraid of how a group might react, and found a couple of solitary cops whom he approached. They cuffed him and sent him to central booking.

Meanwhile, Corey’s phone had died but when he’d finally gotten it charged his heart dropped. Mark’s face was plastered everywhere. “I thought my brother was going to become a hashtag,” he says. “An enraged police force—hearing chatter [of] multiple shooters, some of their own had fallen—and Mark became the face of their rage. My brother had no idea that he was now a domestic terrorist.”

Corey went to the police to explain Mark’s innocence. He eventually found his brother, who police had realized had nothing to do with the attack, arguing with officers about his gun. Corey convinced Mark to leave the weapon. “We know we’ve done nothing wrong, but there are photos of us all over social media,” Corey says. “I didn’t think it would be wise to walk out there with a gun.”

So, the pair left the gun—and Mark’s shirt, which the police refused to give back—and walked away. They were never read their Miranda rights, though both were detained. They were interrogated even after both invoked the right to counsel. They walked away to jeers from policemen. And when they asked that the police take down the tweet, or at least correct it, they were declined.