i need help with julius

i am having trouble understanding what cassius has against caesar that makes him so much hate for caesar?
Please help me understand this concept.

Ceasar is apparently aiming for dictatorship and eventually King. That is anathema to a staunch Republican like Cassius. You need to know a little Roman history.

To Cassius, Julius Ceasar is a Cowardly Weakling grown into a Tyrant.
In the eyes of Cassius, Ceasar is a man of feeble temper. He cries for help when he is in danger. He shakes and weeps like a sick girl. He is nothing more than other Roman. Yet he has grown into a giant under whose tyranny all other Romans are mere slaves. For the sake of the honour and freedom of Rome, this coward, turned into a tyrant must be killed. And yet this very Cassius knows that he is all along wrong. That is why when dying he declares, "Caesar, thou art revenged".