Looks like two "gibsmedat" thugs made a tactical error.
The "gibsmedat" family expresses outrage that their good-hearted boy loved his daughter and it isn't fair that someone would permanently interrupt his cash flow management.
On a side note, the getaway driver is facing second degree murder and conspiracy charges (as he should)."It's not fair," said Virginia Medina, mother of 24-year-old William Medina, who police said robbed Krick's Korner store alongside 18-year-old Robert De Carr on Monday. The two men were shot and killed by a private citizen while leaving the store, and family members want to see charges pressed.
"[William] had no right to lose his life over something that man could have called the police for," said Medina. "He took the law into his own hands and walked away scot-free." "How about if people just start running around here, policing the city on their own? How much worse is it going to get?" said Peter Ratel, Medina's cousin.
The family members said they are hurt by comments suggesting the alleged robbers were "thugs." According to Medina, William was "no big hard criminal" and was rather a family-man who loved his young daughter. Robert De Carr was described similarly by his sister, Taylor De Carr. "My brother was a good kid," she told 69 News.

I assume the unidentified private citizen has a PA LTCF ("License to Carry Firearms"), as he was not arrested and one must be licensed to be packing in PA.