The world have many areas that need the help of blockchain, for example the recently concluded election in Nigeria was filled with violence, killing, rigging and snatching of ballot papers, together with mass voters apartheid in subsequent election. All these would have just been handled with the aid of blockchain voting, without fear of been hacked or hijacked.
This is actually one way that block chain can help a society but we have to also remember that a country that will rely on block chain for a kind of sensitive matter as election would have been highly tech to be able to utilize it maximally. I heard in the same election, card readers were malfunctioning, these are all tech issues.