Just a few months ago, Hezbollah exploded a rocket in soccer field with children playing, killing 12 children. Doesn't get much more "exploding devices in public spaces" than that.
https://www.timesofisrael.com/11-killed-mostly-children-doze...
https://www.timesofisrael.com/11-killed-mostly-children-doze...
Ask yourself, why would the Druze population be a target? It's almost unthinkable that Hezbollah deliberately targeted those civilians.