This was my speech:
Julius Ceasar was a book filled with greed, corruption, and ambition. But the biggest theme of the whole book was power. Ceasar had so much power and was going to turn the city into becoming a dictatorship. His friends decided to kill him so he wouldn't ruin the city.
As you can see from these examples in the book Cassius says:
" CASSIUS
Why, he that cuts off twenty years of life
Cuts off so many years of fearing death.
BRUTUS
Grant that, and then is death a benefit.
So are we Caesar's friends, that have abridged
His time of fearing death. Stoop, Romans, stoop,
And let us bathe our hands in Caesar's blood
Up to the elbows, and besmear our swords." This means that after stabbing Caesar in the back, Cassius and Brutus reason that they've done their pal a favor: now that Caesar's death, he no longer has to worry about dying. Then Brutus has another good idea – the conspirators should wash their hands in their friend's blood to signal that they've freed Rome from tyranny.
In conclusion, this story relates to real-life because many people have a way to much power and need to be put to an end. The only difference is that you could just kill them in the book but in real life that's not exactly an option.