It's even sadder than that, he does this alone. He can't even find someone to counterprotest with him.

> The counterprotester, meanwhile, a lean retiree named Bill Campbell, tried to drown out the sound with a boom box blasting “Another One Bites the Dust.” [emphasis mine]

Not "One of the" or "Some" or "Among the counterprotesters", just the one lone counterprotester whose life is so devoid of meaning that he has chosen to fill it with a solitary celebration of death.