"It was definitely an accident! When our Young Boss served in the military, he was the martial arts champion for several terms. If he really wanted to hurt someone, would that Old Lady only have a bruised knee? Whoever you ask, they'll say he merely bumped into her by accident. Otherwise, he could have easily broken someone's bones with a kick! Moreover, that Old Lady was ranting in front of so many people that 'people with mental illnesses can kill without breaking the law.' The crowd heard her; any normal person would've slapped her a few times for that. Our Young Boss just accidentally touched her, is this incident really that serious?"
What's right and what's wrong, justice lies in the hearts of the people. Mario Yuno was originally suppressing his emotions and didn't intend to harm anyone; it was the Old Lady's fault for being overbearing and speaking out of line.