"88" is the gematria of the neo-Nazi two-digit IQ set, standing for HH--Heil Hitler. Von Brunn signed off that way.
It was also the disgusting creature's age when he got himself
And he's already got it--sort of.
BACKDATE: Reader Bob LeDrew points out that von Brunn is not dead, merely in critical condition. The guard he shot at the Holocaust Museum was not so lucky. I must have been a victim of unconscious wishful thinking. Mea maxima culpa.