"Marc Antony's rhetorical address to the Roman people is a persuasive argument against Brutus and the other conspirators, an address that discredits them. Rather than acting nobly, Antony argues, the assassins killed Julius Caesar in order to gain the power for themselves."

https://www.youtube.com/watch?v=L0UYvn7J_jY - from the History channel. The HBO/BBC show Rome didn't feature this poem; however the reaction scenes from the Citizens of Rome recounting the events is priceless. I tried to find that scene too, but atlas YT and others weren't so cooperative. That said, I would highly recommend the HBO/BBC show Rome if you have not watched it already. :)