Humanity on Trial Closing Statement, help!?

I have a Project for my english cl and what we have to do is put humanity on trial. i am on the prosecution side which is the side saying humanity is evil and we don't deserve to live, that kind of stuff. so my part of the project is to do the closing statement, i already understand that im supposed to kind of recap all the things that were said and leave the jury feeling like we should win the case. the one problem is, is that the person doing the opening statement hasn't finished theirs yet either and this is due tomorrow. i realllyyy need help figuring our what i should say in this or at least just starting it. it would be much appreciated :D thanks!