It's going to take me some time to find it, but the case was 1998, happened outside a court in Lahore, and the pages celebrating it were akhbari or usuli shia. Honestly that's just scratching the surface, if you think shia militant groups aren't involved in terrorism and violence there's a lot of research you can do. And these groups have been around a lot longer than KSA became a serious player in world politics.

Wahhabi Saudi Arabia is a far newer phenomenon than all of this, the visceral hatred originates from the very beginning of the ahlul hadith movement in the subcontinent, long before pakistan or KSA existed. Wahhabi state patronage came long after. They just don't like people actually responding to them in debates. Shias like to have the monopoly in questioning other people's beliefs, don't like their questions replied to or people questioning them