Who was attacked by the brother of a victim of the Saint Valentine's Day massacre?
Peter Gusenberg: Peter Gusenberg a.k.a. ""Goosey"" (September 22, 1888 – February 14, 1929) and his brother Frank were German-American contract killers and members of Chicago's North Side Gang, the main rival to the Chicago Outfit. Peter Gusenberg:  Peter Gusenberg participated in an infamous attack on Al Capone during a vicious gang war.
i don't know