How would you tackle such an essay?
The essay is about comparing the extent and ways the poems 'Veglia' by Ungaretti, 'Voce di Vedetta Morta' by Rebora, and one of Sereni's poem present the subjective voice of a lyrical 'I' at odds with the broader realities of life/society/history.
If I were to write an essay such as the one that lies before you, I would first of all give myself ample time to work on it. This is not a light-weight assignment, which you may already know.
I have provided two eNotes sites on Italian poetry. I would probably collect a few more sources that speak specifically to life, society and the history of Italy.
I would have a copy of the three poems you will be comparing. I would read each one carefully, at least twice, using a highlighter and a pen or pencil to jot notes as to the poems' meanings in the margin.
Next be sure you are aware of the terms "subjective" and "lyrical 'I'." "Subjective" basically means that someone sees things from a personal standpoint that will be "colored" by personal opinions. ("Objective" suggests an emotional distance from a subject, in order to see it as it truly is, rather than how we may personally perceive it to be).
In 1910, Margarete Susman coined the term “lyrical I” and identified “the immediate relation to the entirety of the world” as the essential material of lyric poetry.
In each poem, reviewing what you know about Italian life, society and history, I would identify parts of the poems that contradict the essence of what actually happened in those three areas, based upon objective research, as opposed to what the poem's writer conveys in his/her work (based on perceptions that are emotional and subjective).
To organize the poem, I believe I would group my observations about the three poems in terms of what they have in common. I would dedicate one section to Italian life, another to Italian society, and a third to Italian history.
In your conclusion, do NOT retell what you have already written about. You may want to "pass judgment" on the poems. My focus would be how subjectivity affects the reader, and why there might be a benefit in being more objective about those three subjects. However, with the definition of the "lyrical 'I'," ("the immediate relation to the entirety of the world"), you might also want to address the difficulty of remaining objective if the poem reflects a connection to the world; ironically, this will be subjective.