It's certainly a valid concern your parents have because they worry about your safety but you should objectively look at the risks of studying in Pakistan rather than let the media's fear-mongering machine affect your decisions.
Life for most of the population has not changed significantly due to Emergency Rule being implemented.
The media blows stuff out of proportion and the reality on the ground is usually in stark contrast to what people watching on TV are led to believe.
If it was me, I'd still come, Emergency Rule or not.