Caesar went against Roman law and entered the sacred pomerium with the title of imperator and took control of the city and created his own senate loyal to him. He was not cruel on to his opponents, but instead showed clemency. However, a diplomatic solution could have been reached, Caesars dignitas would have been damaged, but sometimes yielding to others, or following others is the only way to lead. On the flip side, we do not know how crucial dignitas were other than reading ancient sources.