why is book I subtitled "My Father Bleeds History"?

Sorry, I shoud give you more. Vladek's history haunts him. Even in peacetime far away from the past horrors of WW2, Vladek is obsessed with the past. Vladek is an extremely flawed character. All his guilt, pain and regret seem to "bleed" out of him. It is like a wound that never heals. As he fills Artie in on his past the memories come out tainted with the blood of the Holocaust.