Protesters injured in clashes with police in Paris

What do you think the speaker is expressing with the word 'yeah'?

In what context do you think the word 'yeah' is typically used?

How might the tone of the speaker affect the meaning of 'yeah'?

Can you provide an example of a situation where 'yeah' could be used positively?

What are some alternative expressions that convey a similar meaning to 'yeah'?