This happened to me about 20 years ago at an overpass. Instead of a sandbag, it was a rock or even a brick. Partially caved in the windshield, but not to the point where it hit me.
The state cops in the People's Republik of Illinois, where I was living at the time, caught the ****tards that did this, but refused to allow me to swear out a complaint. Wouldn't identify the little shits because they were juveniles.
OK, that's fine. Let's go after the parents.
But no - the victim's rights are completely set aside when it comes to the little ****ing snowflakes that are showing us the result of their upbringing.