You’re right; seems pretty tame. How did the perps get there?
That said, when the City maintains a big public park anywhere nearby, or builds a big schoolhouse with a basketball court outside, everyone expects and tolerates black kids coming to play basketball. Locals might even enjoy seeing their sportsmanship, and don't think much about how many blocks away they might have come from. For instance, the Bella Vista playground smack in the middle of South Philly's Italian Market section is only four blocks from one set of projects and eight blocks from another, but that's not far for youths on bicycles wanting to play basketball in a park where there are night floodlights. So their presence becomes tolerated. Until something happens.