You can start with the large scale, multi year campaign of using MLRS ramps to shoot barrages of unguided rockets from Gaza and Lebanon into Israel.
That is indiscriminate - or even targeting civilians directly.
But because Israel has gone to extreme lengths to counter it there are few causalities these days and combined with medias extreme one-sidedness that means we don't even hear when they hit a hospital in Israel last year.
Cynically speaking, Iron Dome has been an expensive PR disaster for Israel, but that is what one get for caring about ones own citizens and not being allowed to just do counter battery fire until the enemy stops.