Even the relatively benign ones can cause significant harm, as in White Island/Whakaari last year. And of course the Buried Village after Tarawera way back .... 1886 maybe? Googled, yes 1886. Although that volcano doesn't sound as though it could have been benign. I have a booklet about it somewhere, must dig it out and have a read.Rose, it is very edifying to read (e.g.) the Wikipedia article on Active super volcanoes, of which, there are currently at least six! Yellowstone is one, lookie here:
https://en.m.wikipedia.org/wiki/Supervolcano
Enough to cause some contemplation about our 'benign' planet!