How are the codes of ethics for journalists and photojournalists similar? How are they different?

What is the meaning of the word checking as it is used in this sentence from the second paragraph of the passage?

Whats the best lie you told and got away with?

Brutus: but as he was ambitious, i slew him. . who is here so base that would be a bondman? if any, speak, for him have i offended. who is here so rude that would not be a roman? if any, speak, for him have i offended. who is here so vile that will not love his country? if any, speak, for him have i offended. i pause for a reply. which rhetorical device does brutus use in this excerpt?