The belief that a person can and should only feel grief over one sad event at a time is a truly disturbing estimate of our emotional capacity.
When I drink a Glass of water, it's thick and crawling with life. My mouth leads to the interior of my body - a caldron of disease, germs, and perversions of biology. I don't exist individually. I'm made of millions of living creatures, eating each other, decomposing, eating each other.