It may be grim out on D.C.’s streets, with eight homicides in the past seven days, but we’ll say one thing about the job local law enforcement is doing right now: talk about some swift arrests. Yesterday, MPD arrested two suspects in the stabbing death of 14-year-old Giovanni Sanchez, which took place on Friday, and today, Metro Transit Police announced that they have arrested Dekeria Green, 18, in the stabbing at the 13th and U entrance to the U Street/Cardozo Metro stop, which took place on Saturday. That stabbing was reportedly the result of an argument that spilled out onto the street between club goers at The Republic. The Post reports that Metro police used security camera footage to help make an arrest, and that more arrests are possible. The MPD also assisted in the investigation.