Persepolis question for chapter "The Cigarette"

What does the slogan, "To die a martyr is to inject blood into the veins of society" mean? Is it a

fundamentalist philosophy? How do you know?

Two years pass and the war continues. Everyday there are reports on the national news that Iran is winning the war, but Marjane knows this is a lie. She tells her older friends that not even the Americans have an army as large as the Iraqi one that has supposedly already been destroyed by Iran. When the bell rings for class, Marjane's friends tell her that they are going to get a burger at "Kansas."Kansas is a burger joint in one of the nice neighborhoods in North Tehran. The regime had not shut it down and Marjane thinks that this is probably due to their ignorance