It was really shocking, but all footage of significant national events will focus on the most visual reactions.
Personally it didn't rock my world, but I was about 18 and didn't really have much life experience and hadn't seen her amazing romance and wedding (as it was seen) lived out large.
I know that people who were aware of how hounded she was (which factored in her death) felt for the tragedy of that; those who had children were acutely aware of her young sons losing their mum, and it was pre internet, so our consciousness wasn't so saturated with constant celebs so her start shone very bright. Newspapers and TV were the main channels of info and she filled those all the time, so she was really very present in the public life, everyone's attention wasn't so diluted across multiple channels like it is now so she had a lot more presence. Her image was that she really cared about us, she was willing to hold hands with AIDS victims (big deal then), before her the royals had really kept their distance much more so lots of people were fond of her for that reason.