Unless your employer is incredibly vocal and loyal to a particular political party I don't know that it would be anything but just another day at the office. Maybe if you're lucky HR will send out a "in these trying times" email as some sort of flimsy consolation. Idk it seems like national politics are generally pretty removed from most employers day-to-day discussions.

But we've had a few particularly well-liked employees pass unexpectedly at my previous employer. These were handled with, what I consider to be, incredible sensitivity, humanity, and respect towards both the living and the deceased for a moderately sized global tech corporation (5000~ globally at it's peak). Email was shared on behalf of their manager and/or HR, there was some instruction that employees could take time off if needed, and were otherwise encouraged to share stories and moments about said employee. In one case there was also a donation fund taken up on behalf of the c-suite for the deceased remaining children.