A shooting at Fairmount Park in Philadelphia on Memorial Day resulted in the deaths of a 23-year-old man and a 21-year-old woman, with nine others injured, including three juveniles. Authorities suspect that at least three gunmen were involved, utilizing firearms possibly equipped with switches to convert them into fully-automatic weapons, and no arrests have been made yet. This incident is part of a violent holiday weekend across the U.S., which saw multiple mass shootings, highlighting ongoing gun violence issues.