CLEAN : Teen activist Greta Thunberg leads climate strike in Denver Colorado

The video begins with a call to action, urging viewers to not ignore the best available science and to continue fighting for their cause. The speaker expresses gratitude and encourages persistence. The video concludes with organizing a group photo to document the event, emphasizing the importance of showing up and being present.

How does the speaker express gratitude in their speech?

What does the speaker imply by saying 'we all showed up today'?