Mass shootings in Philadelphia and Milwaukee leave 2 dead, over 20 injured

A block party shooting in Philadelphia left 1 dead and 8 injured.
In Milwaukee, 3 separate shootings occurred over the weekend resulting in 1 death and 13 injuries.
The deceased were a 19-year-old man in Philadelphia and a 56-year-old man in Milwaukee.
Multiple shooters were involved in the Philadelphia incident with over 60 rounds fired.
year-old suspects were arrested in relation to 2 of the Milwaukee shootings.