CLEAN : Silence held in Trafalgar Square in memory of WW1 dead

The video tutorial presents a narrative involving girls behind a bar, their laughter, and interactions. It transitions into a reflective message about remembering the past and conveying a message for the future, emphasizing the importance of today's actions for tomorrow.

How does the laughter and giggling of the girls contribute to the overall atmosphere?

What significance does the phrase 'We gave our today' hold in the context?