Violence

How do we cope with an assailant without being violent?
That is a very good question.
A taijiquan person seeks to avoid confrontation and would only use their skills reluctantly.

You do only what is necessary to escape the situation.
Although the effect of your taijiquan may indeed cause discomfort and pain, your disposition should remain composed and compassionate.
At no point would you become angry and deliberately hurt the assailant.