How do we cope with an assailant without being violent?
That is a very good question.

Striking and chin na can undoubtedly cause serious damage to an assailant.
Yet, would that be your intention?

A kung fu person seeks to avoid confrontation and would only use their kung fu reluctantly.

You do only what is necessary to escape the situation.
Although the effect of your kung fu will indeed be violent, your disposition should remain composed and compassionate.
At no point would you become angry and deliberately hurt the assailant.