I think there were a few celebrity deaths that were really unexpected, especially Prince (who died of an accidental drug overdose) and David Bowie (who hadn't r

I think there were a few celebrity deaths that were really unexpected, especially Prince (who died of an accidental drug overdose) and David Bowie (who hadn't revealed he had cancer and outwardly seemed to be healthy and active), so they hit people especially hard. And those came on top of the incredibly bitter political situation in the U.S., the Brexit vote and refugee-related strife in the E.U., rising authoritarianism in Russia and China, and a number of high-profile terrorist attacks and some serious natural disasters.