The next day, Forster searched Twitter for mention of the attack.
One post chilled him.
"I feel for the white man who got beat up at the light," wrote one person.
"I don't," wrote another, indicating laughter. "(do it for trayvon martin)"
Trayvon Martin, an unarmed black teen, died after being shot by a community watch captain with white and Hispanic parents, George Zimmerman, in Florida.
Forster and Rostami, both white, suffered a beating at the hands of a crowd of black teenagers.
Was either case racially motivated? Were Forster and Rostami beaten in some kind of warped, vigilante retribution for a killing 750 miles away, a person none of them knew? Was it just bombast? Is a beating funny, ever?