Question

who says, "Let him be caesar"?what light does this throw on the speaker?​

Answer 1

For the people of Rome, Caesar was the ultimate power and might. This shows that they change their mind very quickly. They do not fully understand the reasons of Caesars death. They now accept Brutus as the ultimate power and might.

Answer 2

Third citizen of Rome says the above lines while Brutus finished the speech.He want to say that keep Brutus on the place of Caesar.
This shows that citizens were fully satisfied with Brutus