Thanks P.P. Botticelli is an Artist that has not drawn my attention before, thought the name has gone in to common parlance because of his depictions of females with rather fulsome figures. And Savonarola's name was all that was known to me.
I am amazed at how so many periods have seen Apocalyptic fear engendered by a charismatic Preacher, and often by a date on the Calendar ! as happened in the year 1000 of course, inevitable that one !
But Savonarola's followers seem to be early iterations of other fanatical groups we have seen in later times, it shows the power of propaganda mixed with belief, something not lost upon today's Politicians !
Thanks again, I shall delve further !