Blessed Feet

I like this, about the red shoes which I found on Amy's site:

After many false starts, the doors finally opened to reveal the Pope. He came down the steps toward his car and, then, headed toward the barricades on the lawn. I was standing close, but as he approached, I lost sight of him. He had to walk between two large shrubs and he is not a tall man.
The shrubs were a type of evergreen, trimmed round, fresh spring green. My eyes fell to the bottom of the bush. I do not recall focusing on the noise. All seemed quiet and time seemed to stop. I felt like a child playing in my neighborhood; looking beneath the shrubs, as I often had. What was I looking for in particular back in my childhood? Nothing in particular, looking beneath the shrubs was an exercise in pure desire, an exercise in hope.
Then, in a moment, I was recalled to the present. Amidst the spring green shrub I made a find, rather something emerged. I saw bright red. It had always been exciting to spy a red bird in the garden, so bright. The shoes! The images deluged my mind: fire from a bush, the shoes of the fisherman, the bloodied feet of Christ, St. Peter’s bloodied feet. The Holy Father had greeted Catholic educators yesterday evening with Isaiah’s words quoted by St. Paul: “How beautiful are the footsteps of those who bring good news” (Rom 10:15-17). The Holy Father brings Good News, Christ is our Hope! This morning we found abundant joy in Christ with each other. May the words of Psalm 65 be a prayer answered as the Holy Father travels to New York:
You crown the year with your goodness.Abundance flows in your steps,In the pastures of the wilderness it flows.

I thought they signified walking in the way of martyrdom.